diff --git a/HMCL/build.gradle b/HMCL/build.gradle
index 11fb43bae..673386f29 100644
--- a/HMCL/build.gradle
+++ b/HMCL/build.gradle
@@ -1,3 +1,6 @@
+import org.apache.tools.ant.filters.ReplaceTokens
+import proguard.gradle.ProGuardTask
+
 import java.security.MessageDigest
 import java.util.jar.JarFile
 import java.util.jar.Pack200
@@ -15,11 +18,9 @@ if (buildnumber == null)
 
 def versionroot = System.getenv("VERSION_ROOT")
 if (versionroot == null)
-    versionroot = "3.0"
+    versionroot = "3.1"
 
-String mavenGroupId = 'HMCL'
 String mavenVersion = versionroot + '.' + buildnumber
-String bundleName = "Hello Minecraft! Launcher"
 version = mavenVersion
 
 dependencies {
@@ -30,7 +31,7 @@ dependencies {
 task generateSources(type: Sync) {
     from 'src/main/java'
     into "$buildDir/generated-src"
-    filter(org.apache.tools.ant.filters.ReplaceTokens, tokens: [
+    filter(ReplaceTokens, tokens: [
             'HELLO_MINECRAFT_LAUNCHER_VERSION_FOR_GRADLE_REPLACING': mavenVersion
     ])
 }
@@ -122,7 +123,7 @@ task makePackGZ(dependsOn: jar) doLast {
     fileEx.append sha1Hex
 }
 
-task proguard(type: proguard.gradle.ProGuardTask, dependsOn: jar) {
+task proguard(type: ProGuardTask, dependsOn: jar) {
     ext {
         def re = jar.classifier
         injar = jar.archivePath
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java b/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java
new file mode 100644
index 000000000..5ad5a770a
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/Launcher.java
@@ -0,0 +1,152 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl;
+
+import com.jfoenix.concurrency.JFXUtilities;
+import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.stage.Stage;
+import org.jackhuang.hmcl.setting.Settings;
+import org.jackhuang.hmcl.task.Schedulers;
+import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.ui.Controllers;
+import org.jackhuang.hmcl.upgrade.AppDataUpgrader;
+import org.jackhuang.hmcl.upgrade.IUpgrader;
+import org.jackhuang.hmcl.upgrade.UpdateChecker;
+import org.jackhuang.hmcl.util.*;
+
+import java.io.File;
+import java.util.Arrays;
+import java.util.ResourceBundle;
+import java.util.concurrent.TimeUnit;
+import java.util.logging.Level;
+
+public final class Launcher extends Application {
+
+    @Override
+    public void start(Stage primaryStage) {
+        Thread.currentThread().setUncaughtExceptionHandler(CRASH_REPORTER);
+
+        try {
+            // When launcher visibility is set to "hide and reopen" without Platform.implicitExit = false,
+            // Stage.show() cannot work again because JavaFX Toolkit have already shut down.
+            Platform.setImplicitExit(false);
+            Controllers.initialize(primaryStage);
+            primaryStage.setResizable(false);
+            primaryStage.setScene(Controllers.getScene());
+
+            UPDATE_CHECKER.process(false)
+                    .then(Task.of(Schedulers.javafx(), () -> {
+                        if (UPDATE_CHECKER.isOutOfDate())
+                            Controllers.showUpdate();
+                    }))
+                    .start();
+
+            primaryStage.show();
+        } catch (Throwable e) {
+            CRASH_REPORTER.uncaughtException(Thread.currentThread(), e);
+        }
+    }
+
+    public static void main(String[] args) {
+        Thread.setDefaultUncaughtExceptionHandler(CRASH_REPORTER);
+
+        try {
+            Logging.start();
+
+            // NetworkUtils.setUserAgentSupplier(() -> "Hello Minecraft! Launcher");
+            Constants.UI_THREAD_SCHEDULER = Constants.JAVAFX_UI_THREAD_SCHEDULER;
+            UPGRADER.parseArguments(VersionNumber.asVersion(VERSION), Arrays.asList(args));
+
+            Logging.LOG.info("*** " + TITLE + " ***");
+
+            launch(args);
+        } catch (Throwable e) { // Fucking JavaFX will suppress the exception and will break our crash reporter.
+            CRASH_REPORTER.uncaughtException(Thread.currentThread(), e);
+        }
+    }
+
+    public static void stopApplication() {
+        Logging.LOG.info("Stopping application.\n" + StringUtils.getStackTrace(Thread.currentThread().getStackTrace()));
+
+        JFXUtilities.runInFX(() -> {
+            if (Controllers.getStage() == null)
+                return;
+            Controllers.getStage().close();
+            Schedulers.shutdown();
+            Controllers.shutdown();
+            Platform.exit();
+            Lang.executeDelayed(OperatingSystem::forceGC, TimeUnit.SECONDS, 5, true);
+        });
+    }
+
+    public static void stopWithoutPlatform() {
+        Logging.LOG.info("Stopping application without JavaFX Toolkit.\n" + StringUtils.getStackTrace(Thread.currentThread().getStackTrace()));
+
+        JFXUtilities.runInFX(() -> {
+            if (Controllers.getStage() == null)
+                return;
+            Controllers.getStage().close();
+            Schedulers.shutdown();
+            Controllers.shutdown();
+            Lang.executeDelayed(OperatingSystem::forceGC, TimeUnit.SECONDS, 5, true);
+        });
+    }
+
+    public static File getWorkingDirectory(String folder) {
+        String home = System.getProperty("user.home", ".");
+        switch (OperatingSystem.CURRENT_OS) {
+            case LINUX:
+                return new File(home, "." + folder + "/");
+            case WINDOWS:
+                String appdata = System.getenv("APPDATA");
+                return new File(Lang.nonNull(appdata, home), "." + folder + "/");
+            case OSX:
+                return new File(home, "Library/Application Support/" + folder);
+            default:
+                return new File(home, folder + "/");
+        }
+    }
+
+    public static String i18n(String key) {
+        try {
+            return RESOURCE_BUNDLE.getString(key);
+        } catch (Exception e) {
+            Logging.LOG.log(Level.SEVERE, "Cannot find key " + key + " in resource bundle", e);
+            return key;
+        }
+    }
+
+    public static String i18n(String key, Object... formatArgs) {
+        return String.format(i18n(key), formatArgs);
+    }
+
+    public static final File MINECRAFT_DIRECTORY = getWorkingDirectory("minecraft");
+    public static final File HMCL_DIRECTORY = getWorkingDirectory("hmcl");
+
+    public static final String VERSION = "@HELLO_MINECRAFT_LAUNCHER_VERSION_FOR_GRADLE_REPLACING@";
+    public static final String NAME = "HMCL";
+    public static final String TITLE = NAME + " " + VERSION;
+    public static final ResourceBundle RESOURCE_BUNDLE = Settings.INSTANCE.getLocale().getResourceBundle();
+    public static final UpdateChecker UPDATE_CHECKER = new UpdateChecker(VersionNumber.asVersion(VERSION));
+    public static final IUpgrader UPGRADER = new AppDataUpgrader();
+    public static final CrashReporter CRASH_REPORTER = new CrashReporter();
+
+    public static final String CONTACT = "http://huangyuhui.duapp.com/hmcl.php";
+    public static final String PUBLISH = "http://www.mcbbs.net/thread-142335-1-1.html";
+}
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/Main.java b/HMCL/src/main/java/org/jackhuang/hmcl/Main.java
index 47259d278..d604e70f9 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/Main.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/Main.java
@@ -17,128 +17,24 @@
  */
 package org.jackhuang.hmcl;
 
-import com.jfoenix.concurrency.JFXUtilities;
-import javafx.application.Application;
-import javafx.application.Platform;
-import javafx.stage.Stage;
-import org.jackhuang.hmcl.setting.Settings;
-import org.jackhuang.hmcl.task.Schedulers;
-import org.jackhuang.hmcl.task.Task;
-import org.jackhuang.hmcl.ui.Controllers;
-import org.jackhuang.hmcl.upgrade.AppDataUpgrader;
-import org.jackhuang.hmcl.upgrade.IUpgrader;
-import org.jackhuang.hmcl.upgrade.UpdateChecker;
-import org.jackhuang.hmcl.util.*;
+import org.jackhuang.hmcl.util.Logging;
 
+import javax.swing.*;
 import java.io.File;
-import java.util.Arrays;
-import java.util.ResourceBundle;
-import java.util.concurrent.TimeUnit;
-import java.util.logging.Level;
 
-public final class Main extends Application {
-
-    @Override
-    public void start(Stage primaryStage) {
-        Thread.currentThread().setUncaughtExceptionHandler(CRASH_REPORTER);
-
-        try {
-            // When launcher visibility is set to "hide and reopen" without Platform.implicitExit = false,
-            // Stage.show() cannot work again because JavaFX Toolkit have already shut down.
-            Platform.setImplicitExit(false);
-            Controllers.initialize(primaryStage);
-            primaryStage.setResizable(false);
-            primaryStage.setScene(Controllers.getScene());
-            primaryStage.show();
-        } catch (Throwable e) {
-            CRASH_REPORTER.uncaughtException(Thread.currentThread(), e);
-        }
-    }
+public final class Main {
 
     public static void main(String[] args) {
-        Thread.setDefaultUncaughtExceptionHandler(CRASH_REPORTER);
+        String currentDirectory = new File("").getAbsolutePath();
+        if (currentDirectory.contains("!")) {
+            System.err.println("Exclamation mark(!) is not allowed in the path where HMCL is in. Forcibly exit.");
 
-        try {
-            // NetworkUtils.setUserAgentSupplier(() -> "Hello Minecraft! Launcher");
-            Constants.UI_THREAD_SCHEDULER = Constants.JAVAFX_UI_THREAD_SCHEDULER;
-            UPGRADER.parseArguments(VersionNumber.asVersion(VERSION), Arrays.asList(args));
-
-            Logging.LOG.info("*** " + TITLE + " ***");
-
-            UPDATE_CHECKER.process(false)
-                    .then(Task.of(Schedulers.javafx(), () -> {
-                        if (UPDATE_CHECKER.isOutOfDate())
-                            Controllers.showUpdate();
-                    }))
-                    .start();
-
-            launch(args);
-        } catch (Throwable e) { // Fucking JavaFX will suppress the exception and will break our crash reporter.
-            CRASH_REPORTER.uncaughtException(Thread.currentThread(), e);
-        }
+            // No Chinese translation because both Swing and JavaFX cannot render Chinese character properly when exclamation mark exists in the path.
+            String message = "Exclamation mark(!) is not allowed in the path where HMCL is in.\nThe path is " + currentDirectory;
+            JOptionPane.showMessageDialog(null, message, "Error", JOptionPane.ERROR_MESSAGE);
+            System.exit(1);
+        } else
+            Launcher.main(args);
     }
 
-    public static void stopApplication() {
-        JFXUtilities.runInFX(() -> {
-            stopWithoutPlatform();
-            Platform.exit();
-        });
-    }
-
-    public static void stopWithoutPlatform() {
-        JFXUtilities.runInFX(() -> {
-            if (Controllers.getStage() == null)
-                return;
-            Controllers.getStage().close();
-
-            Logging.LOG.info("Shutting down executor services.");
-            Schedulers.shutdown();
-
-            Controllers.shutdown();
-
-            Lang.executeDelayed(OperatingSystem::forceGC, TimeUnit.SECONDS, 5, true);
-        });
-    }
-
-    public static String i18n(String key) {
-        try {
-            return RESOURCE_BUNDLE.getString(key);
-        } catch (Exception e) {
-            Logging.LOG.log(Level.SEVERE, "Cannot find key " + key + " in resource bundle", e);
-            return key;
-        }
-    }
-
-    public static String i18n(String key, Object... formatArgs) {
-        return String.format(i18n(key), formatArgs);
-    }
-
-    public static File getWorkingDirectory(String folder) {
-        String home = System.getProperty("user.home", ".");
-        switch (OperatingSystem.CURRENT_OS) {
-            case LINUX:
-                return new File(home, "." + folder + "/");
-            case WINDOWS:
-                String appdata = System.getenv("APPDATA");
-                return new File(Lang.nonNull(appdata, home), "." + folder + "/");
-            case OSX:
-                return new File(home, "Library/Application Support/" + folder);
-            default:
-                return new File(home, folder + "/");
-        }
-    }
-
-    public static final File MINECRAFT_DIRECTORY = getWorkingDirectory("minecraft");
-    public static final File HMCL_DIRECTORY = getWorkingDirectory("hmcl");
-
-    public static final String VERSION = "@HELLO_MINECRAFT_LAUNCHER_VERSION_FOR_GRADLE_REPLACING@";
-    public static final String NAME = "HMCL";
-    public static final String TITLE = NAME + " " + VERSION;
-    public static final ResourceBundle RESOURCE_BUNDLE = Settings.INSTANCE.getLocale().getResourceBundle();
-    public static final UpdateChecker UPDATE_CHECKER = new UpdateChecker(VersionNumber.asVersion(VERSION));
-    public static final IUpgrader UPGRADER = new AppDataUpgrader();
-    public static final CrashReporter CRASH_REPORTER = new CrashReporter();
-
-    public static final String CONTACT = "https://huangyuhui.duapp.com/hmcl.php";
-    public static final String PUBLISH = "http://www.mcbbs.net/thread-142335-1-1.html";
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/event/AccountLoadingEvent.java b/HMCL/src/main/java/org/jackhuang/hmcl/event/AccountLoadingEvent.java
new file mode 100644
index 000000000..02485fc97
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/event/AccountLoadingEvent.java
@@ -0,0 +1,61 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.event;
+
+import org.jackhuang.hmcl.auth.Account;
+import org.jackhuang.hmcl.setting.Profile;
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * This event gets fired when loading accounts.
+ * <br>
+ * This event is fired on the {@link org.jackhuang.hmcl.event.EventBus#EVENT_BUS}
+ *
+ * @author huangyuhui
+ */
+public class AccountLoadingEvent extends Event {
+
+    private final Collection<Account> accounts;
+
+    /**
+     * Constructor.
+     *
+     * @param source {@link org.jackhuang.hmcl.setting.Settings}
+     */
+    public AccountLoadingEvent(Object source, Collection<Account> accounts) {
+        super(source);
+        this.accounts = Collections.unmodifiableCollection(accounts);
+    }
+
+
+    public Collection<Account> getAccounts() {
+        return accounts;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("accounts", accounts)
+                .toString();
+    }
+}
+
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/event/OutOfDateEvent.java b/HMCL/src/main/java/org/jackhuang/hmcl/event/OutOfDateEvent.java
index 9f5d25840..fe6fbfd4b 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/event/OutOfDateEvent.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/event/OutOfDateEvent.java
@@ -17,6 +17,7 @@
  */
 package org.jackhuang.hmcl.event;
 
+import org.jackhuang.hmcl.util.ToStringBuilder;
 import org.jackhuang.hmcl.util.VersionNumber;
 
 /**
@@ -42,4 +43,11 @@ public final class OutOfDateEvent extends Event {
         return true;
     }
 
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", getSource())
+                .append("version", getVersion())
+                .toString();
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileChangedEvent.java b/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileChangedEvent.java
index 87d229e44..2155d94cc 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileChangedEvent.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileChangedEvent.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.event;
 
 import org.jackhuang.hmcl.setting.Profile;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 /**
  * This event gets fired when the selected profile changed.
@@ -44,4 +45,11 @@ public final class ProfileChangedEvent extends Event {
         return profile;
     }
 
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("profile", profile)
+                .toString();
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileLoadingEvent.java b/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileLoadingEvent.java
index f5ef78dc8..81ff05379 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileLoadingEvent.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/event/ProfileLoadingEvent.java
@@ -17,6 +17,12 @@
  */
 package org.jackhuang.hmcl.event;
 
+import org.jackhuang.hmcl.setting.Profile;
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
+import java.util.Collection;
+import java.util.Collections;
+
 /**
  * This event gets fired when loading profiles.
  * <br>
@@ -26,14 +32,29 @@ package org.jackhuang.hmcl.event;
  */
 public class ProfileLoadingEvent extends Event {
 
+    private final Collection<Profile> profiles;
+
     /**
      * Constructor.
      *
      * @param source {@link org.jackhuang.hmcl.setting.Settings}
      */
-    public ProfileLoadingEvent(Object source) {
+    public ProfileLoadingEvent(Object source, Collection<Profile> profiles) {
         super(source);
+
+        this.profiles = Collections.unmodifiableCollection(profiles);
     }
 
+    public Collection<Profile> getProfiles() {
+        return profiles;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("profiles", profiles)
+                .toString();
+    }
 }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/AccountHelper.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/AccountHelper.java
index 2cfcbf058..a3e50cc26 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/AccountHelper.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/AccountHelper.java
@@ -19,7 +19,7 @@ package org.jackhuang.hmcl.game;
 
 import javafx.geometry.Rectangle2D;
 import javafx.scene.image.Image;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.Account;
 import org.jackhuang.hmcl.auth.yggdrasil.GameProfile;
 import org.jackhuang.hmcl.auth.yggdrasil.Texture;
@@ -43,7 +43,7 @@ public final class AccountHelper {
     public static final AccountHelper INSTANCE = new AccountHelper();
     private AccountHelper() {}
 
-    public static final File SKIN_DIR = new File(Main.HMCL_DIRECTORY, "skins");
+    public static final File SKIN_DIR = new File(Launcher.HMCL_DIRECTORY, "skins");
 
     public static void loadSkins() {
         loadSkins(Proxy.NO_PROXY);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameLauncher.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameLauncher.java
index a999a6e1a..6bef2d069 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameLauncher.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameLauncher.java
@@ -17,7 +17,7 @@
  */
 package org.jackhuang.hmcl.game;
 
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.AuthInfo;
 import org.jackhuang.hmcl.launch.DefaultLauncher;
 import org.jackhuang.hmcl.launch.ProcessListener;
@@ -45,7 +45,7 @@ public final class HMCLGameLauncher extends DefaultLauncher {
     protected void appendJvmArgs(List<String> result) {
         super.appendJvmArgs(result);
 
-        result.add("-Dminecraft.launcher.version=" + Main.VERSION);
-        result.add("-Dminecraft.launcher.brand=" + Main.NAME);
+        result.add("-Dminecraft.launcher.version=" + Launcher.VERSION);
+        result.add("-Dminecraft.launcher.brand=" + Launcher.NAME);
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
index ee7695306..b98f7355f 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLGameRepository.java
@@ -173,10 +173,20 @@ public class HMCLGameRepository extends DefaultGameRepository {
         return new File(getVersionRoot(id), "icon.png");
     }
 
-    public void saveVersionSetting(String id) {
+    public boolean saveVersionSetting(String id) {
         if (!versionSettings.containsKey(id))
-            return;
-        Lang.invoke(() -> FileUtils.writeText(getVersionSettingFile(id), GSON.toJson(versionSettings.get(id))));
+            return false;
+        File file = getVersionSettingFile(id);
+        if (!FileUtils.makeDirectory(file.getAbsoluteFile().getParentFile()))
+            return false;
+
+        try {
+            FileUtils.writeText(file, GSON.toJson(versionSettings.get(id)));
+            return true;
+        } catch (IOException e) {
+            Logging.LOG.log(Level.SEVERE, "Unable to save version setting of " + id, e);
+            return false;
+        }
     }
 
     public boolean forbidsVersion(String id) {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackInstallTask.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackInstallTask.java
index df29d0ad1..0fcb82976 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackInstallTask.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackInstallTask.java
@@ -42,7 +42,6 @@ public final class HMCLModpackInstallTask extends Task {
     private final String name;
     private final HMCLGameRepository repository;
     private final Modpack modpack;
-    private final File run;
     private final List<Task> dependencies = new LinkedList<>();
     private final List<Task> dependents = new LinkedList<>();
 
@@ -52,8 +51,8 @@ public final class HMCLModpackInstallTask extends Task {
         this.zipFile = zipFile;
         this.name = name;
         this.modpack = modpack;
-        this.run = repository.getRunDirectory(name);
 
+        File run = repository.getRunDirectory(name);
         File json = repository.getModpackConfiguration(name);
         if (repository.hasVersion(name) && !json.exists())
             throw new IllegalArgumentException("Version " + name + " already exists");
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackManager.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackManager.java
index 8791b578d..89544be28 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackManager.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/HMCLModpackManager.java
@@ -26,7 +26,6 @@ import org.jackhuang.hmcl.util.StringUtils;
 
 import java.io.File;
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.List;
 
 /**
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
index 715ea22be..3fa53c0c1 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
@@ -19,13 +19,12 @@ package org.jackhuang.hmcl.game;
 
 import com.jfoenix.concurrency.JFXUtilities;
 import javafx.application.Platform;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.Account;
 import org.jackhuang.hmcl.auth.AuthInfo;
 import org.jackhuang.hmcl.auth.AuthenticationException;
 import org.jackhuang.hmcl.auth.ServerDisconnectException;
 import org.jackhuang.hmcl.download.DefaultDependencyManager;
-import org.jackhuang.hmcl.download.MaintainTask;
 import org.jackhuang.hmcl.launch.*;
 import org.jackhuang.hmcl.mod.CurseCompletionTask;
 import org.jackhuang.hmcl.setting.LauncherVisibility;
@@ -51,38 +50,34 @@ public final class LauncherHelper {
     public static final LauncherHelper INSTANCE = new LauncherHelper();
     private LauncherHelper(){}
 
-    private TaskExecutor executor;
     public static final Queue<ManagedProcess> PROCESSES = new ConcurrentLinkedQueue<>();
     private final TaskExecutorDialogPane launchingStepsPane = new TaskExecutorDialogPane(() -> {});
 
-    public void launch(String selectedVersion, File scriptFile) {
-        Profile profile = Settings.INSTANCE.getSelectedProfile();
-        GameRepository repository = profile.getRepository();
-        Account account = Settings.INSTANCE.getSelectedAccount();
+    public void launch(Profile profile, Account account, String selectedVersion, File scriptFile) {
         if (account == null)
-            throw new IllegalStateException("No account");
+            throw new IllegalArgumentException("No account");
+
+        GameRepository repository = profile.getRepository();
 
         Version version = repository.getResolvedVersion(selectedVersion);
         VersionSetting setting = profile.getVersionSetting(selectedVersion);
 
         Platform.runLater(() -> {
             try {
-                checkGameState(profile, setting, version, () -> Schedulers.newThread().schedule(() -> launch0(selectedVersion, scriptFile)));
+                checkGameState(profile, setting, version, () -> Schedulers.newThread().schedule(() -> launch0(profile, account, selectedVersion, scriptFile)));
             } catch (InterruptedException ignore) {
             }
         });
     }
 
-    private void launch0(String selectedVersion, File scriptFile) {
-        Profile profile = Settings.INSTANCE.getSelectedProfile();
+    private void launch0(Profile profile, Account account, String selectedVersion, File scriptFile) {
         GameRepository repository = profile.getRepository();
         DefaultDependencyManager dependencyManager = profile.getDependency();
         Version version = repository.getResolvedVersion(selectedVersion);
-        Account account = Settings.INSTANCE.getSelectedAccount();
         VersionSetting setting = profile.getVersionSetting(selectedVersion);
         Optional<String> gameVersion = GameVersion.minecraftVersion(repository.getVersionJar(version));
 
-        executor = Task.of(Schedulers.javafx(), () -> Controllers.dialog(launchingStepsPane))
+        TaskExecutor executor = Task.of(Schedulers.javafx(), () -> Controllers.dialog(launchingStepsPane))
                 .then(Task.of(Schedulers.javafx(), () -> emitStatus(LoadingState.DEPENDENCIES)))
                 .then(variables -> {
                     if (setting.isNotCheckGame())
@@ -93,7 +88,7 @@ public final class LauncherHelper {
                 .then(Task.of(Schedulers.javafx(), () -> emitStatus(LoadingState.MODS)))
                 .then(new CurseCompletionTask(dependencyManager, selectedVersion))
                 .then(Task.of(Schedulers.javafx(), () -> emitStatus(LoadingState.LOGGING_IN)))
-                .then(Task.of(Main.i18n("account.methods"), variables -> {
+                .then(Task.of(Launcher.i18n("account.methods"), variables -> {
                     try {
                         try {
                             variables.set("account", account.logIn());
@@ -105,7 +100,6 @@ public final class LauncherHelper {
                         }
                     } catch (AuthenticationException e) {
                         variables.set("account", DialogController.logIn(account));
-                        JFXUtilities.runInFX(() -> Controllers.dialog(launchingStepsPane));
                     }
                 }))
                 .then(Task.of(Schedulers.javafx(), () -> emitStatus(LoadingState.LAUNCHING)))
@@ -117,12 +111,12 @@ public final class LauncherHelper {
                 .then(variables -> {
                     DefaultLauncher launcher = variables.get("launcher");
                     if (scriptFile == null) {
-                        return new LaunchTask<>(launcher::launch).setName(Main.i18n("version.launch"));
+                        return new LaunchTask<>(launcher::launch).setName(Launcher.i18n("version.launch"));
                     } else {
                         return new LaunchTask<>(() -> {
                             launcher.makeLaunchScript(scriptFile);
                             return null;
-                        }).setName(Main.i18n("version.launch_script"));
+                        }).setName(Launcher.i18n("version.launch_script"));
                     }
                 })
                 .then(Task.of(variables -> {
@@ -130,15 +124,17 @@ public final class LauncherHelper {
                         ManagedProcess process = variables.get(LaunchTask.LAUNCH_ID);
                         PROCESSES.add(process);
                         if (setting.getLauncherVisibility() == LauncherVisibility.CLOSE)
-                            Main.stopApplication();
+                            Launcher.stopApplication();
                         else
                             launchingStepsPane.setCancel(() -> {
                                 process.stop();
                                 Controllers.closeDialog();
                             });
                     } else
-                        Platform.runLater(() ->
-                                Controllers.dialog(Main.i18n("version.launch_script.success", scriptFile.getAbsolutePath())));
+                        Platform.runLater(() -> {
+                            Controllers.closeDialog();
+                            Controllers.dialog(Launcher.i18n("version.launch_script.success", scriptFile.getAbsolutePath()));
+                        });
 
                 }))
                 .executor();
@@ -158,16 +154,14 @@ public final class LauncherHelper {
             public void onStop(boolean success, TaskExecutor executor) {
                 if (!success) {
                     Platform.runLater(() -> {
+                        Controllers.closeDialog();
                         if (executor.getLastException() != null)
                             Controllers.dialog(I18nException.getStackTrace(executor.getLastException()),
-                                    scriptFile == null ? Main.i18n("launch.failed") : Main.i18n("version.launch_script.failed"),
+                                    scriptFile == null ? Launcher.i18n("launch.failed") : Launcher.i18n("version.launch_script.failed"),
                                     MessageBox.ERROR_MESSAGE, Controllers::closeDialog);
-                        else
-                            Controllers.closeDialog();
                     });
                 }
-
-                LauncherHelper.this.executor = null;
+                launchingStepsPane.setExecutor(null);
             }
         });
 
@@ -180,35 +174,35 @@ public final class LauncherHelper {
         VersionNumber gameVersion = VersionNumber.asVersion(GameVersion.minecraftVersion(profile.getRepository().getVersionJar(version)).orElse("Unknown"));
         JavaVersion java = setting.getJavaVersion();
         if (java == null) {
-            Controllers.dialog(Main.i18n("launch.wrong_javadir"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
+            Controllers.dialog(Launcher.i18n("launch.wrong_javadir"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             setting.setJava(null);
             java = JavaVersion.fromCurrentEnvironment();
             flag = true;
         }
 
-        if (java.getParsedVersion() < JavaVersion.JAVA_8) {
-            Controllers.dialog(Main.i18n("launch.advice.newer_java"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
+        if (!flag && java.getParsedVersion() < JavaVersion.JAVA_8) {
+            Controllers.dialog(Launcher.i18n("launch.advice.newer_java"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
 
-        if (java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.12.5")) < 0 && version.getMainClass().contains("launchwrapper")) {
-            Controllers.dialog(Main.i18n("launch.advice.java9"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
+        if (!flag && java.getParsedVersion() >= JavaVersion.JAVA_9 && gameVersion.compareTo(VersionNumber.asVersion("1.12.5")) < 0 && version.getMainClass().contains("launchwrapper")) {
+            Controllers.dialog(Launcher.i18n("launch.advice.java9"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, null);
             suggest = false;
             flag = true;
         }
 
-        if (java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
+        if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
                 org.jackhuang.hmcl.util.Platform.IS_64_BIT) {
-            Controllers.dialog(Main.i18n("launch.advice.different_platform"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
+            Controllers.dialog(Launcher.i18n("launch.advice.different_platform"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
-        if (java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
+        if (!flag && java.getPlatform() == org.jackhuang.hmcl.util.Platform.BIT_32 &&
                 setting.getMaxMemory() > 1.5 * 1024) {
-            Controllers.dialog(Main.i18n("launch.advice.too_large_memory_for_32bit"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
+            Controllers.dialog(Launcher.i18n("launch.advice.too_large_memory_for_32bit"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
-        if (OperatingSystem.TOTAL_MEMORY > 0 && OperatingSystem.TOTAL_MEMORY < setting.getMaxMemory()) {
-            Controllers.dialog(Main.i18n("launch.advice.not_enough_space", OperatingSystem.TOTAL_MEMORY), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
+        if (!flag && OperatingSystem.TOTAL_MEMORY > 0 && OperatingSystem.TOTAL_MEMORY < setting.getMaxMemory()) {
+            Controllers.dialog(Launcher.i18n("launch.advice.not_enough_space", OperatingSystem.TOTAL_MEMORY), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE, onAccept);
             flag = true;
         }
 
@@ -225,10 +219,8 @@ public final class LauncherHelper {
     }
 
     public void emitStatus(LoadingState state) {
-
         launchingStepsPane.setTitle(state.getLocalizedMessage());
         launchingStepsPane.setSubtitle((state.ordinal() + 1) + " / " + LoadingState.values().length);
-        Controllers.dialog(launchingStepsPane);
     }
 
     private void checkExit(LauncherVisibility v) {
@@ -245,8 +237,8 @@ public final class LauncherHelper {
                 Platform.runLater(() -> {
                     // Shut down the platform when user closed log window.
                     Platform.setImplicitExit(true);
-                    // If we use Main.stop(), log window will be halt immediately.
-                    Main.stopWithoutPlatform();
+                    // If we use Launcher.stop(), log window will be halt immediately.
+                    Launcher.stopWithoutPlatform();
                 });
                 break;
         }
@@ -264,11 +256,11 @@ public final class LauncherHelper {
             try {
                 setResult(supplier.get());
             } catch (PermissionException e) {
-                throw new I18nException(Main.i18n("launch.failed.executable_permission"), e);
+                throw new I18nException(Launcher.i18n("launch.failed.executable_permission"), e);
             } catch (ProcessCreationException e) {
-                throw new I18nException(Main.i18n("launch.failed.creating_process") + e.getLocalizedMessage(), e);
+                throw new I18nException(Launcher.i18n("launch.failed.creating_process") + e.getLocalizedMessage(), e);
             } catch (NotDecompressingNativesException e) {
-                throw new I18nException(Main.i18n("launch.failed.decompressing_natives") + e.getLocalizedMessage(), e);
+                throw new I18nException(Launcher.i18n("launch.failed.decompressing_natives") + e.getLocalizedMessage(), e);
             }
         }
 
@@ -360,7 +352,8 @@ public final class LauncherHelper {
                         });
                         break;
                     case CLOSE:
-                        throw new Error("Never come to here");
+                        // Never come to here.
+                        break;
                     case KEEP:
                         // No operations here
                         break;
@@ -385,10 +378,10 @@ public final class LauncherHelper {
 
                     switch (exitType) {
                         case JVM_ERROR:
-                            logWindow.setTitle(Main.i18n("launch.failed.cannot_create_jvm"));
+                            logWindow.setTitle(Launcher.i18n("launch.failed.cannot_create_jvm"));
                             break;
                         case APPLICATION_ERROR:
-                            logWindow.setTitle(Main.i18n("launch.failed.exited_abnormally"));
+                            logWindow.setTitle(Launcher.i18n("launch.failed.exited_abnormally"));
                             break;
                     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/game/LoadingState.java b/HMCL/src/main/java/org/jackhuang/hmcl/game/LoadingState.java
index da1ab1c10..9f71f91d8 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/LoadingState.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/LoadingState.java
@@ -17,7 +17,7 @@
  */
 package org.jackhuang.hmcl.game;
 
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 
 public enum LoadingState {
     DEPENDENCIES("launch.state.dependencies"),
@@ -33,6 +33,6 @@ public enum LoadingState {
     }
 
     public String getLocalizedMessage() {
-        return Main.i18n(key);
+        return Launcher.i18n(key);
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java
index b4e31c246..b1d6ac5e9 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Accounts.java
@@ -17,8 +17,7 @@
  */
 package org.jackhuang.hmcl.setting;
 
-import com.google.gson.JsonParseException;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.Account;
 import org.jackhuang.hmcl.auth.AccountFactory;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
@@ -31,6 +30,8 @@ import org.jackhuang.hmcl.auth.yggdrasil.MojangYggdrasilProvider;
 import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
 import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccountFactory;
 import org.jackhuang.hmcl.task.FileDownloadTask;
+import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.task.TaskResult;
 import org.jackhuang.hmcl.util.*;
 
 import java.io.File;
@@ -74,8 +75,8 @@ public final class Accounts {
 
     private static String downloadAuthlibInjector() throws Exception {
         AuthlibInjectorBuildInfo buildInfo = AuthlibInjectorBuildInfo.requestBuildInfo();
-        File jar = new File(Main.HMCL_DIRECTORY, "authlib-injector.jar");
-        File local = new File(Main.HMCL_DIRECTORY, "authlib-injector.txt");
+        File jar = new File(Launcher.HMCL_DIRECTORY, "authlib-injector.jar");
+        File local = new File(Launcher.HMCL_DIRECTORY, "authlib-injector.txt");
         int buildNumber = 0;
         try {
             buildNumber = Integer.parseInt(FileUtils.readText(local));
@@ -88,17 +89,17 @@ public final class Accounts {
         return jar.getAbsolutePath();
     }
 
-    public static String getAuthlibInjectorServerName(String serverIp) {
+    public static String getAuthlibInjectorServerName(String serverIp) throws Exception {
         if (AUTHLIB_INJECTOR_SERVER_NAMES.containsKey(serverIp))
             return AUTHLIB_INJECTOR_SERVER_NAMES.get(serverIp);
         else {
-            try {
-                AuthlibInjectorServerResponse response = Constants.GSON.fromJson(NetworkUtils.doGet(NetworkUtils.toURL(serverIp)), AuthlibInjectorServerResponse.class);
-                AUTHLIB_INJECTOR_SERVER_NAMES.put(serverIp, response.getMeta().getServerName());
-                return response.getMeta().getServerName();
-            } catch (JsonParseException | IOException | NullPointerException e) {
-                return null;
-            }
+            AuthlibInjectorServerResponse response = Constants.GSON.fromJson(NetworkUtils.doGet(NetworkUtils.toURL(serverIp)), AuthlibInjectorServerResponse.class);
+            AUTHLIB_INJECTOR_SERVER_NAMES.put(serverIp, response.getMeta().getServerName());
+            return response.getMeta().getServerName();
         }
     }
+
+    public static TaskResult<String> getAuthlibInjectorServerNameAsync(AuthlibInjectorAccount account) {
+        return Task.ofResult("serverName", () -> Accounts.getAuthlibInjectorServerName(account.getServerBaseURL()));
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
index be3ed382a..afd722a3c 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Config.java
@@ -18,7 +18,7 @@
 package org.jackhuang.hmcl.setting;
 
 import com.google.gson.annotations.SerializedName;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.util.JavaVersion;
 
 import java.util.*;
@@ -35,7 +35,7 @@ final class Config {
     private String backgroundImage = null;
 
     @SerializedName("commonpath")
-    private String commonDirectory = Main.MINECRAFT_DIRECTORY.getAbsolutePath();
+    private String commonDirectory = Launcher.MINECRAFT_DIRECTORY.getAbsolutePath();
 
     @SerializedName("hasProxy")
     private boolean hasProxy = false;
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java
index fe69bba78..8b38c133f 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/DownloadProviders.java
@@ -23,7 +23,6 @@ import org.jackhuang.hmcl.download.DownloadProvider;
 import org.jackhuang.hmcl.download.MojangDownloadProvider;
 import org.jackhuang.hmcl.util.Lang;
 
-import java.util.Arrays;
 import java.util.List;
 
 public final class DownloadProviders {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Locales.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Locales.java
index e5b625fed..f23274680 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Locales.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Locales.java
@@ -20,7 +20,6 @@ package org.jackhuang.hmcl.setting;
 import org.jackhuang.hmcl.ui.construct.UTF8Control;
 import org.jackhuang.hmcl.util.Lang;
 
-import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 import java.util.ResourceBundle;
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profile.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profile.java
index 4d56d93d6..6b7c4257b 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profile.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profile.java
@@ -24,6 +24,7 @@ import org.jackhuang.hmcl.game.HMCLGameRepository;
 import org.jackhuang.hmcl.mod.ModManager;
 import org.jackhuang.hmcl.util.ImmediateObjectProperty;
 import org.jackhuang.hmcl.util.ImmediateStringProperty;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 import java.io.File;
 import java.lang.reflect.Type;
@@ -146,6 +147,14 @@ public final class Profile {
             vs.setUsesGlobal(true);
     }
 
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("gameDir", getGameDir())
+                .append("name", getName())
+                .toString();
+    }
+
     public void addPropertyChangedListener(InvalidationListener listener) {
         nameProperty.addListener(listener);
         globalProperty.addListener(listener);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profiles.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profiles.java
index 0f3158d7a..eb22f9607 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profiles.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Profiles.java
@@ -17,7 +17,7 @@
  */
 package org.jackhuang.hmcl.setting;
 
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 
 public final class Profiles {
     private Profiles() {
@@ -26,9 +26,9 @@ public final class Profiles {
     public static String getProfileDisplayName(Profile profile) {
         switch (profile.getName()) {
             case Settings.DEFAULT_PROFILE:
-                return Main.i18n("profile.default");
+                return Launcher.i18n("profile.default");
             case Settings.HOME_PROFILE:
-                return Main.i18n("profile.home");
+                return Launcher.i18n("profile.home");
             default:
                 return profile.getName();
         }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Proxies.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Proxies.java
index db174bff3..919351d30 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Proxies.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Proxies.java
@@ -20,7 +20,6 @@ package org.jackhuang.hmcl.setting;
 import org.jackhuang.hmcl.util.Lang;
 
 import java.net.Proxy;
-import java.util.Arrays;
 import java.util.List;
 
 /**
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Settings.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Settings.java
index ef22ca06b..584d2e6a5 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/Settings.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/Settings.java
@@ -23,11 +23,12 @@ import javafx.beans.property.ObjectProperty;
 import javafx.beans.property.StringProperty;
 import javafx.beans.value.ObservableValue;
 import javafx.scene.text.Font;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.Account;
 import org.jackhuang.hmcl.auth.AccountFactory;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
 import org.jackhuang.hmcl.download.DownloadProvider;
+import org.jackhuang.hmcl.event.AccountLoadingEvent;
 import org.jackhuang.hmcl.event.EventBus;
 import org.jackhuang.hmcl.event.ProfileChangedEvent;
 import org.jackhuang.hmcl.event.ProfileLoadingEvent;
@@ -62,7 +63,7 @@ public class Settings {
 
     private final Config SETTINGS = initSettings();
 
-    private Map<String, Account> accounts = new HashMap<>();
+    private final Map<String, Account> accounts = new HashMap<>();
 
     {
         loadProxy();
@@ -368,6 +369,7 @@ public class Settings {
 
     public void addAccount(Account account) {
         accounts.put(Accounts.getAccountId(account), account);
+        onAccountLoading();
     }
 
     public Account getAccount(String name, String character) {
@@ -381,12 +383,14 @@ public class Settings {
     public void deleteAccount(String name, String character) {
         accounts.remove(Accounts.getAccountId(name, character));
 
+        onAccountLoading();
         selectedAccount.get();
     }
 
     public void deleteAccount(Account account) {
         accounts.remove(Accounts.getAccountId(account));
 
+        onAccountLoading();
         selectedAccount.get();
     }
 
@@ -469,7 +473,7 @@ public class Settings {
         checkProfileMap();
 
         if (!hasProfile(SETTINGS.getSelectedProfile())) {
-            SETTINGS.setSelectedProfile(getProfileMap().keySet().stream().findFirst().get());
+            getProfileMap().keySet().stream().findFirst().ifPresent(SETTINGS::setSelectedProfile);
             Schedulers.computation().schedule(this::onProfileChanged);
         }
         return getProfile(SETTINGS.getSelectedProfile());
@@ -506,6 +510,7 @@ public class Settings {
             throw new IllegalArgumentException("Profile's name is empty");
 
         getProfileMap().put(ver.getName(), ver);
+        Schedulers.computation().schedule(this::onProfileLoading);
 
         ver.nameProperty().setChangedListener(this::profileNameChanged);
 
@@ -525,12 +530,12 @@ public class Settings {
     private void checkProfileMap() {
         if (getProfileMap().isEmpty()) {
             getProfileMap().put(DEFAULT_PROFILE, new Profile(DEFAULT_PROFILE));
-            getProfileMap().put(HOME_PROFILE, new Profile(HOME_PROFILE, Main.MINECRAFT_DIRECTORY));
+            getProfileMap().put(HOME_PROFILE, new Profile(HOME_PROFILE, Launcher.MINECRAFT_DIRECTORY));
         }
     }
 
     private void onProfileChanged() {
-        EventBus.EVENT_BUS.fireEvent(new ProfileChangedEvent(SETTINGS, getSelectedProfile()));
+        EventBus.EVENT_BUS.fireEvent(new ProfileChangedEvent(this, getSelectedProfile()));
         getSelectedProfile().getRepository().refreshVersionsAsync().start();
     }
 
@@ -543,7 +548,11 @@ public class Settings {
      * Invoked by loading GUI phase.
      */
     public void onProfileLoading() {
-        EventBus.EVENT_BUS.fireEvent(new ProfileLoadingEvent(SETTINGS));
+        EventBus.EVENT_BUS.fireEvent(new ProfileLoadingEvent(this, getProfiles()));
         onProfileChanged();
     }
+
+    public void onAccountLoading() {
+        EventBus.EVENT_BUS.fireEvent(new AccountLoadingEvent(this, getAccounts()));
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/setting/VersionSetting.java b/HMCL/src/main/java/org/jackhuang/hmcl/setting/VersionSetting.java
index 6e3e3bf61..834ca4203 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/setting/VersionSetting.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/setting/VersionSetting.java
@@ -19,7 +19,7 @@ package org.jackhuang.hmcl.setting;
 
 import com.google.gson.*;
 import javafx.beans.InvalidationListener;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.game.LaunchOptions;
 import org.jackhuang.hmcl.util.*;
 
@@ -482,8 +482,8 @@ public final class VersionSetting {
         return new LaunchOptions.Builder()
                 .setGameDir(gameDir)
                 .setJava(javaVersion)
-                .setVersionName(Main.TITLE)
-                .setProfileName(Main.TITLE)
+                .setVersionName(Launcher.TITLE)
+                .setProfileName(Launcher.TITLE)
                 .setMinecraftArgs(getMinecraftArgs())
                 .setJavaArgs(getJavaArgs())
                 .setMaxMemory(getMaxMemory())
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountItem.java
deleted file mode 100644
index 57c0db788..000000000
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountItem.java
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see {http://www.gnu.org/licenses/}.
- */
-package org.jackhuang.hmcl.ui;
-
-import com.jfoenix.controls.JFXButton;
-import com.jfoenix.controls.JFXProgressBar;
-import com.jfoenix.controls.JFXRadioButton;
-import javafx.beans.binding.Bindings;
-import javafx.event.EventHandler;
-import javafx.fxml.FXML;
-import javafx.scene.control.Label;
-import javafx.scene.control.ToggleGroup;
-import javafx.scene.effect.BlurType;
-import javafx.scene.effect.DropShadow;
-import javafx.scene.image.ImageView;
-import javafx.scene.input.MouseEvent;
-import javafx.scene.layout.HBox;
-import javafx.scene.layout.Pane;
-import javafx.scene.layout.StackPane;
-import javafx.scene.layout.VBox;
-import javafx.scene.paint.Color;
-import org.jackhuang.hmcl.auth.Account;
-import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
-import org.jackhuang.hmcl.auth.offline.OfflineAccount;
-import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
-import org.jackhuang.hmcl.game.AccountHelper;
-import org.jackhuang.hmcl.setting.Accounts;
-import org.jackhuang.hmcl.setting.Settings;
-import org.jackhuang.hmcl.setting.Theme;
-import org.jackhuang.hmcl.task.Schedulers;
-import org.jackhuang.hmcl.task.Task;
-
-public final class AccountItem extends StackPane {
-
-    private final Account account;
-
-    @FXML
-    private Pane icon;
-    @FXML private VBox content;
-    @FXML private StackPane header;
-    @FXML private StackPane body;
-    @FXML private JFXButton btnDelete;
-    @FXML private JFXButton btnRefresh;
-    @FXML private Label lblUser;
-    @FXML private Label lblType;
-    @FXML private Label lblEmail;
-    @FXML private Label lblServer;
-    @FXML private Label lblCurrentAccount;
-    @FXML private JFXRadioButton chkSelected;
-    @FXML private JFXProgressBar pgsSkin;
-    @FXML private ImageView portraitView;
-    @FXML private HBox buttonPane;
-
-    public AccountItem(int i, Account account, ToggleGroup toggleGroup) {
-        this.account = account;
-
-        FXUtils.loadFXML(this, "/assets/fxml/account-item.fxml");
-
-        setEffect(new DropShadow(BlurType.GAUSSIAN, Color.rgb(0, 0, 0, 0.26), 5.0, 0.12, -0.5, 1.0));
-
-        chkSelected.setToggleGroup(toggleGroup);
-        btnDelete.setGraphic(SVG.delete(Theme.blackFillBinding(), 15, 15));
-        btnRefresh.setGraphic(SVG.refresh(Theme.blackFillBinding(), 15, 15));
-
-        // create image view
-        icon.translateYProperty().bind(Bindings.createDoubleBinding(() -> header.getBoundsInParent().getHeight() - icon.getHeight() / 2 - 16, header.boundsInParentProperty(), icon.heightProperty()));
-
-        chkSelected.getProperties().put("account", account);
-        setSelected(Settings.INSTANCE.getSelectedAccount() == account);
-
-        lblUser.setText(account.getCharacter());
-        lblType.setText(AccountsPage.accountType(account));
-        lblEmail.setText(account.getUsername());
-
-        if (account instanceof AuthlibInjectorAccount) {
-            Task.ofResult("serverName", () -> Accounts.getAuthlibInjectorServerName(((AuthlibInjectorAccount) account).getServerBaseURL()))
-                    .subscribe(Schedulers.javafx(), variables -> lblServer.setText(variables.get("serverName")));
-        }
-
-        if (account instanceof YggdrasilAccount) {
-            btnRefresh.setOnMouseClicked(e -> {
-                pgsSkin.setVisible(true);
-                AccountHelper.refreshSkinAsync((YggdrasilAccount) account)
-                        .subscribe(Schedulers.javafx(), this::loadSkin);
-            });
-            AccountHelper.loadSkinAsync((YggdrasilAccount) account)
-                    .subscribe(Schedulers.javafx(), this::loadSkin);
-        } else
-            loadSkin();
-
-        if (account instanceof OfflineAccount) { // Offline Account cannot be refreshed,
-            buttonPane.getChildren().remove(btnRefresh);
-        }
-    }
-
-    private void loadSkin() {
-        pgsSkin.setVisible(false);
-        portraitView.setViewport(AccountHelper.getViewport(4));
-        if (account instanceof YggdrasilAccount)
-            portraitView.setImage(AccountHelper.getSkin((YggdrasilAccount) account, 4));
-        else
-            portraitView.setImage(AccountHelper.getDefaultSkin(account, 4));
-        FXUtils.limitSize(portraitView, 32, 32);
-    }
-
-    public Account getAccount() {
-        return account;
-    }
-
-    public void setSelected(boolean selected) {
-        lblCurrentAccount.setVisible(selected);
-        chkSelected.setSelected(selected);
-    }
-
-    public void setOnDeleteButtonMouseClicked(EventHandler<? super MouseEvent> eventHandler) {
-        btnDelete.setOnMouseClicked(eventHandler);
-    }
-}
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountLoginPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountLoginPane.java
index 955b1b750..4d66c6935 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountLoginPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountLoginPane.java
@@ -73,7 +73,7 @@ public class AccountLoginPane extends StackPane {
             } else if (account instanceof NoSelectedCharacterException) {
                 dialog.close();
             } else if (account instanceof Exception) {
-                lblCreationWarning.setText(AccountsPage.accountException((Exception) account));
+                lblCreationWarning.setText(AddAccountPane.accountException((Exception) account));
             }
 
             progressBar.setVisible(false);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountPage.java
new file mode 100644
index 000000000..18d5a96c0
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountPage.java
@@ -0,0 +1,152 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.ui;
+
+import com.jfoenix.controls.JFXButton;
+import com.jfoenix.controls.JFXProgressBar;
+import javafx.beans.property.ObjectProperty;
+import javafx.beans.property.SimpleObjectProperty;
+import javafx.beans.property.SimpleStringProperty;
+import javafx.beans.property.StringProperty;
+import javafx.fxml.FXML;
+import javafx.scene.control.Label;
+import javafx.scene.image.Image;
+import javafx.scene.layout.BorderPane;
+import javafx.scene.layout.StackPane;
+import org.jackhuang.hmcl.Launcher;
+import org.jackhuang.hmcl.auth.Account;
+import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
+import org.jackhuang.hmcl.auth.offline.OfflineAccount;
+import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
+import org.jackhuang.hmcl.game.AccountHelper;
+import org.jackhuang.hmcl.setting.Accounts;
+import org.jackhuang.hmcl.setting.Settings;
+import org.jackhuang.hmcl.setting.Theme;
+import org.jackhuang.hmcl.task.Schedulers;
+import org.jackhuang.hmcl.ui.construct.ComponentList;
+import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
+
+import java.util.Optional;
+
+public class AccountPage extends StackPane implements DecoratorPage {
+    private final StringProperty title;
+    private final ObjectProperty<Runnable> onDelete = new SimpleObjectProperty<>(this, "onDelete");
+    private final VersionListItem item;
+    private final Account account;
+
+    @FXML
+    private Label lblType;
+    @FXML
+    private Label lblServer;
+    @FXML
+    private Label lblCharacter;
+    @FXML
+    private Label lblEmail;
+    @FXML
+    private BorderPane paneServer;
+    @FXML
+    private BorderPane paneEmail;
+    @FXML
+    private ComponentList componentList;
+    @FXML
+    private JFXButton btnDelete;
+    @FXML
+    private JFXButton btnRefresh;
+    @FXML
+    private JFXProgressBar progressBar;
+
+    public AccountPage(Account account, VersionListItem item) {
+        this.account = account;
+        this.item = item;
+
+        title = new SimpleStringProperty(this, "title", Launcher.i18n("account") + " - " + account.getCharacter());
+
+        FXUtils.loadFXML(this, "/assets/fxml/account.fxml");
+
+        FXUtils.setLimitWidth(this, 300);
+        if (account instanceof AuthlibInjectorAccount) {
+            Accounts.getAuthlibInjectorServerNameAsync((AuthlibInjectorAccount) account)
+                    .subscribe(Schedulers.javafx(), variables -> lblServer.setText(variables.get("serverName")));
+            FXUtils.setLimitHeight(this, 182);
+        } else {
+            componentList.removeChildren(paneServer);
+
+            if (account instanceof OfflineAccount) {
+                componentList.removeChildren(paneEmail);
+                FXUtils.setLimitHeight(this, 110);
+            } else
+                FXUtils.setLimitHeight(this, 145);
+        }
+
+        btnDelete.setGraphic(SVG.delete(Theme.blackFillBinding(), 15, 15));
+        btnRefresh.setGraphic(SVG.refresh(Theme.blackFillBinding(), 15, 15));
+
+        lblCharacter.setText(account.getCharacter());
+        lblType.setText(AddAccountPane.accountType(account));
+        lblEmail.setText(account.getUsername());
+
+        btnRefresh.setVisible(account instanceof YggdrasilAccount);
+    }
+
+    @FXML
+    private void onDelete() {
+        Settings.INSTANCE.deleteAccount(account);
+        Optional.ofNullable(onDelete.get()).ifPresent(Runnable::run);
+    }
+
+    @FXML
+    private void onRefresh() {
+        if (account instanceof YggdrasilAccount) {
+            progressBar.setVisible(true);
+            AccountHelper.refreshSkinAsync((YggdrasilAccount) account)
+                    .finalized(Schedulers.javafx(), (variables, isDependentsSucceeded) -> {
+                        progressBar.setVisible(false);
+
+                        if (isDependentsSucceeded) {
+                            Image image = AccountHelper.getSkin((YggdrasilAccount) account, 4);
+                            item.setImage(image, AccountHelper.getViewport(4));
+                        }
+                    }).start();
+        }
+    }
+
+    public String getTitle() {
+        return title.get();
+    }
+
+    @Override
+    public StringProperty titleProperty() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title.set(title);
+    }
+
+    public Runnable getOnDelete() {
+        return onDelete.get();
+    }
+
+    public ObjectProperty<Runnable> onDeleteProperty() {
+        return onDelete;
+    }
+
+    public void setOnDelete(Runnable onDelete) {
+        this.onDelete.set(onDelete);
+    }
+}
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountsPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AddAccountPane.java
similarity index 61%
rename from HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountsPage.java
rename to HMCL/src/main/java/org/jackhuang/hmcl/ui/AddAccountPane.java
index 34c9c31b9..643ad47da 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AccountsPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AddAccountPane.java
@@ -1,6 +1,6 @@
 /*
  * Hello Minecraft! Launcher.
- * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
+ * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -19,22 +19,17 @@ package org.jackhuang.hmcl.ui;
 
 import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.*;
-import javafx.application.Platform;
-import javafx.beans.property.SimpleStringProperty;
-import javafx.beans.property.StringProperty;
 import javafx.fxml.FXML;
 import javafx.geometry.Pos;
 import javafx.scene.Node;
 import javafx.scene.control.Hyperlink;
 import javafx.scene.control.Label;
-import javafx.scene.control.ScrollPane;
-import javafx.scene.control.ToggleGroup;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.*;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
 import org.jackhuang.hmcl.auth.offline.OfflineAccount;
@@ -48,22 +43,18 @@ import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.ui.construct.AdvancedListBox;
 import org.jackhuang.hmcl.ui.construct.IconedItem;
 import org.jackhuang.hmcl.ui.construct.Validator;
-import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
+import org.jackhuang.hmcl.util.Logging;
 
 import java.util.Collection;
-import java.util.LinkedList;
 import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.CountDownLatch;
+import java.util.logging.Level;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
-public final class AccountsPage extends StackPane implements DecoratorPage {
-    private final StringProperty title = new SimpleStringProperty(this, "title", Main.i18n("account"));
+public class AddAccountPane extends StackPane {
 
-    @FXML
-    private ScrollPane scrollPane;
-    @FXML private JFXMasonryPane masonryPane;
-    @FXML private JFXDialog dialog;
     @FXML private JFXTextField txtUsername;
     @FXML private JFXPasswordField txtPassword;
     @FXML private Label lblCreationWarning;
@@ -73,16 +64,17 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
     @FXML private JFXProgressBar progressBar;
     @FXML private Label lblAddInjectorServer;
     @FXML private Hyperlink linkAddInjectorServer;
+    @FXML private JFXDialogLayout layout;
+    private final Runnable finalization;
 
-    {
-        FXUtils.loadFXML(this, "/assets/fxml/account.fxml");
+    public AddAccountPane(Runnable finalization) {
+        this.finalization = finalization;
 
-        getChildren().remove(dialog);
-        dialog.setDialogContainer(this);
+        FXUtils.loadFXML(this, "/assets/fxml/account-add.fxml");
 
-        FXUtils.smoothScrolling(scrollPane);
+        loadServers();
 
-        cboType.getItems().setAll(Main.i18n("account.methods.offline"), Main.i18n("account.methods.yggdrasil"), Main.i18n("account.methods.authlib_injector"));
+        cboType.getItems().setAll(Launcher.i18n("account.methods.offline"), Launcher.i18n("account.methods.yggdrasil"), Launcher.i18n("account.methods.authlib_injector"));
         cboType.getSelectionModel().selectedIndexProperty().addListener((a, b, newValue) -> {
             txtPassword.setVisible(newValue.intValue() != 0);
             lblPassword.setVisible(newValue.intValue() != 0);
@@ -98,42 +90,20 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
 
         txtPassword.setOnAction(e -> onCreationAccept());
         txtUsername.setOnAction(e -> onCreationAccept());
-        txtUsername.getValidators().add(new Validator(Main.i18n("input.email"), str -> !txtPassword.isVisible() || str.contains("@")));
+        txtUsername.getValidators().add(new Validator(Launcher.i18n("input.email"), str -> !txtPassword.isVisible() || str.contains("@")));
 
-        FXUtils.onChangeAndOperate(Settings.INSTANCE.selectedAccountProperty(), account -> {
-            for (Node node : masonryPane.getChildren())
-                if (node instanceof AccountItem)
-                    ((AccountItem) node).setSelected(account == ((AccountItem) node).getAccount());
-        });
-
-        loadAccounts();
-        loadServers();
-
-        if (Settings.INSTANCE.getAccounts().isEmpty())
-            addNewAccount();
     }
 
-    public void loadAccounts() {
-        List<Node> children = new LinkedList<>();
-        int i = 0;
-        ToggleGroup group = new ToggleGroup();
-        for (Account account : Settings.INSTANCE.getAccounts()) {
-            children.add(buildNode(++i, account, group));
-        }
-        group.selectedToggleProperty().addListener((a, b, newValue) -> {
-            if (newValue != null)
-                Settings.INSTANCE.setSelectedAccount((Account) newValue.getProperties().get("account"));
-        });
-        FXUtils.resetChildren(masonryPane, children);
-        Platform.runLater(() -> {
-            masonryPane.requestLayout();
-            scrollPane.requestLayout();
-        });
-    }
-
-    public void loadServers() {
+    private void loadServers() {
         Task.ofResult("list", () -> Settings.INSTANCE.getAuthlibInjectorServerURLs().parallelStream()
-                .map(serverURL -> new TwoLineListItem(Accounts.getAuthlibInjectorServerName(serverURL), serverURL))
+                .flatMap(serverURL -> {
+                    try {
+                        return Stream.of(new TwoLineListItem(Accounts.getAuthlibInjectorServerName(serverURL), serverURL));
+                    } catch (Exception e) {
+                        Logging.LOG.log(Level.WARNING, "Authlib-injector server root " + serverURL + " cannot be recognized.", e);
+                        return Stream.empty();
+                    }
+                })
                 .collect(Collectors.toList()))
                 .subscribe(Task.of(Schedulers.javafx(), variables -> {
                     cboServers.getItems().setAll(variables.<Collection<TwoLineListItem>>get("list"));
@@ -142,28 +112,6 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
                 }));
     }
 
-    private Node buildNode(int i, Account account, ToggleGroup group) {
-        AccountItem item = new AccountItem(i, account, group);
-        item.setOnDeleteButtonMouseClicked(e -> {
-            Settings.INSTANCE.deleteAccount(account);
-            Platform.runLater(this::loadAccounts);
-        });
-        return item;
-    }
-
-    @FXML
-    private void addNewAccount() {
-        txtUsername.setText("");
-        txtPassword.setText("");
-        lblCreationWarning.setText("");
-        dialog.show();
-    }
-
-    @FXML
-    private void onAddInjecterServer() {
-        Controllers.navigate(Controllers.getServersPage());
-    }
-
     @FXML
     private void onCreationAccept() {
         int type = cboType.getSelectionModel().getSelectedIndex();
@@ -173,23 +121,22 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
         progressBar.setVisible(true);
         lblCreationWarning.setText("");
         Task.ofResult("create_account", () -> {
-                AccountFactory<?> factory;
-                switch (type) {
-                    case 0: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.OFFLINE_ACCOUNT_KEY); break;
-                    case 1: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.YGGDRASIL_ACCOUNT_KEY); break;
-                    case 2: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.AUTHLIB_INJECTOR_ACCOUNT_KEY); break;
-                    default: throw new Error();
-                }
+            AccountFactory<?> factory;
+            switch (type) {
+                case 0: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.OFFLINE_ACCOUNT_KEY); break;
+                case 1: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.YGGDRASIL_ACCOUNT_KEY); break;
+                case 2: factory = Accounts.ACCOUNT_FACTORY.get(Accounts.AUTHLIB_INJECTOR_ACCOUNT_KEY); break;
+                default: throw new Error();
+            }
 
-                return factory.create(new Selector(), username, password, apiRoot, Settings.INSTANCE.getProxy());
+            return factory.create(new Selector(), username, password, apiRoot, Settings.INSTANCE.getProxy());
         }).finalized(Schedulers.javafx(), variables -> {
             Settings.INSTANCE.addAccount(variables.get("create_account"));
-            dialog.close();
-            loadAccounts();
             progressBar.setVisible(false);
+            finalization.run();
         }, exception -> {
             if (exception instanceof NoSelectedCharacterException) {
-                dialog.close();
+                finalization.run();
             } else {
                 lblCreationWarning.setText(accountException(exception));
             }
@@ -199,46 +146,24 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
 
     @FXML
     private void onCreationCancel() {
-        dialog.close();
+        finalization.run();
     }
 
-    public String getTitle() {
-        return title.get();
+    @FXML
+    private void onAddInjecterServer() {
+        finalization.run();
+        Controllers.navigate(Controllers.getServersPage());
     }
 
-    @Override
-    public StringProperty titleProperty() {
-        return title;
+    private void showSelector(Node node) {
+        getChildren().setAll(node);
     }
 
-    public void setTitle(String title) {
-        this.title.set(title);
+    private void closeSelector() {
+        getChildren().setAll(layout);
     }
 
-    public static String accountException(Exception exception) {
-        if (exception instanceof InvalidCredentialsException) {
-            return Main.i18n("account.failed.invalid_credentials");
-        } else if (exception instanceof NoCharacterException) {
-            return Main.i18n("account.failed.no_charactor");
-        } else if (exception instanceof ServerDisconnectException) {
-            return Main.i18n("account.failed.connect_authentication_server");
-        } else if (exception instanceof InvalidTokenException) {
-            return Main.i18n("account.failed.invalid_token");
-        } else if (exception instanceof InvalidPasswordException) {
-            return Main.i18n("account.failed.invalid_password");
-        } else {
-            return exception.getClass() + ": " + exception.getLocalizedMessage();
-        }
-    }
-
-    public static String accountType(Account account) {
-        if (account instanceof OfflineAccount) return Main.i18n("account.methods.offline");
-        else if (account instanceof AuthlibInjectorAccount) return Main.i18n("account.methods.authlib_injector");
-        else if (account instanceof YggdrasilAccount) return Main.i18n("account.methods.yggdrasil");
-        else throw new Error(Main.i18n("account.methods.no_method") + ": " + account);
-    }
-
-    private static class Selector extends BorderPane implements CharacterSelector {
+    private class Selector extends BorderPane implements CharacterSelector {
         private final AdvancedListBox listBox = new AdvancedListBox();
         private final JFXButton cancel = new JFXButton();
 
@@ -248,11 +173,11 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
         {
             setStyle("-fx-padding: 8px;");
 
-            cancel.setText(Main.i18n("button.cancel"));
+            cancel.setText(Launcher.i18n("button.cancel"));
             StackPane.setAlignment(cancel, Pos.BOTTOM_RIGHT);
             cancel.setOnMouseClicked(e -> latch.countDown());
 
-            listBox.startCategory(Main.i18n("account.choose"));
+            listBox.startCategory(Launcher.i18n("account.choose"));
 
             setCenter(listBox);
 
@@ -293,20 +218,43 @@ public final class AccountsPage extends StackPane implements DecoratorPage {
                 listBox.add(accountItem);
             }
 
-            JFXUtilities.runInFX(() -> Controllers.dialog(this));
+            JFXUtilities.runInFX(() -> showSelector(this));
 
             try {
                 latch.await();
 
-                JFXUtilities.runInFX(Controllers::closeDialog);
-
                 if (selectedProfile == null)
                     throw new NoSelectedCharacterException(account);
 
+                JFXUtilities.runInFX(AddAccountPane.this::closeSelector);
+
                 return selectedProfile;
             } catch (InterruptedException ignore) {
                 throw new NoSelectedCharacterException(account);
             }
         }
     }
+
+    public static String accountException(Exception exception) {
+        if (exception instanceof InvalidCredentialsException) {
+            return Launcher.i18n("account.failed.invalid_credentials");
+        } else if (exception instanceof NoCharacterException) {
+            return Launcher.i18n("account.failed.no_charactor");
+        } else if (exception instanceof ServerDisconnectException) {
+            return Launcher.i18n("account.failed.connect_authentication_server");
+        } else if (exception instanceof InvalidTokenException) {
+            return Launcher.i18n("account.failed.invalid_token");
+        } else if (exception instanceof InvalidPasswordException) {
+            return Launcher.i18n("account.failed.invalid_password");
+        } else {
+            return exception.getClass() + ": " + exception.getLocalizedMessage();
+        }
+    }
+
+    public static String accountType(Account account) {
+        if (account instanceof OfflineAccount) return Launcher.i18n("account.methods.offline");
+        else if (account instanceof AuthlibInjectorAccount) return Launcher.i18n("account.methods.authlib_injector");
+        else if (account instanceof YggdrasilAccount) return Launcher.i18n("account.methods.yggdrasil");
+        else throw new Error(Launcher.i18n("account.methods.no_method") + ": " + account);
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AuthlibInjectorServersPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AuthlibInjectorServersPage.java
index f9e874077..dd5e20352 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/AuthlibInjectorServersPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/AuthlibInjectorServersPage.java
@@ -9,7 +9,7 @@ import javafx.scene.control.Label;
 import javafx.scene.control.ScrollPane;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorServerInfo;
 import org.jackhuang.hmcl.setting.Accounts;
 import org.jackhuang.hmcl.setting.Settings;
@@ -18,14 +18,16 @@ import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.ui.animation.ContainerAnimations;
 import org.jackhuang.hmcl.ui.animation.TransitionHandler;
 import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
+import org.jackhuang.hmcl.util.Logging;
 import org.jackhuang.hmcl.util.NetworkUtils;
 
 import java.util.Collection;
-import java.util.Objects;
+import java.util.logging.Level;
 import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 public class AuthlibInjectorServersPage extends StackPane implements DecoratorPage {
-    private final StringProperty title = new SimpleStringProperty(this, "title", Main.i18n("account.injector.server"));
+    private final StringProperty title = new SimpleStringProperty(this, "title", Launcher.i18n("account.injector.server"));
 
     @FXML private ScrollPane scrollPane;
     @FXML private StackPane addServerContainer;
@@ -69,7 +71,14 @@ public class AuthlibInjectorServersPage extends StackPane implements DecoratorPa
         spinner.setVisible(true);
 
         Task.ofResult("list", () -> Settings.INSTANCE.getAuthlibInjectorServerURLs().parallelStream()
-                .map(serverURL -> new AuthlibInjectorServerItem(new AuthlibInjectorServerInfo(serverURL, Accounts.getAuthlibInjectorServerName(serverURL)), this::removeServer))
+                .flatMap(serverURL -> {
+                    try {
+                        return Stream.of(new AuthlibInjectorServerItem(new AuthlibInjectorServerInfo(serverURL, Accounts.getAuthlibInjectorServerName(serverURL)), this::removeServer));
+                    } catch (Exception e) {
+                        Logging.LOG.log(Level.WARNING, "Authlib-injector server root " + serverURL + " cannot be recognized.", e);
+                        return Stream.empty();
+                    }
+                })
                 .collect(Collectors.toList()))
                 .subscribe(Task.of(Schedulers.javafx(), variables -> {
                     listPane.getChildren().setAll(variables.<Collection<? extends Node>>get("list"));
@@ -105,7 +114,7 @@ public class AuthlibInjectorServersPage extends StackPane implements DecoratorPa
         progressBar.setVisible(true);
         addServerPane.setDisable(true);
 
-        Task.ofResult("serverName", () -> Objects.requireNonNull(Accounts.getAuthlibInjectorServerName(serverIp)))
+        Task.ofResult("serverName", () -> Accounts.getAuthlibInjectorServerName(serverIp))
                 .finalized(Schedulers.javafx(), (variables, isDependentsSucceeded) -> {
                     progressBar.setVisible(false);
                     addServerPane.setDisable(false);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
index c734d4d83..52dad1769 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Controllers.java
@@ -17,13 +17,14 @@
  */
 package org.jackhuang.hmcl.ui;
 
+import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.JFXDialog;
 import javafx.scene.Node;
 import javafx.scene.Scene;
 import javafx.scene.image.Image;
 import javafx.scene.layout.Region;
 import javafx.stage.Stage;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Settings;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.task.TaskExecutor;
@@ -32,6 +33,7 @@ import org.jackhuang.hmcl.ui.construct.MessageBox;
 import org.jackhuang.hmcl.ui.construct.MessageDialogPane;
 import org.jackhuang.hmcl.ui.construct.TaskExecutorDialogPane;
 import org.jackhuang.hmcl.util.JavaVersion;
+import org.jackhuang.hmcl.util.Lang;
 
 import java.util.function.Consumer;
 
@@ -93,7 +95,9 @@ public final class Controllers {
     public static void initialize(Stage stage) {
         Controllers.stage = stage;
 
-        decorator = new Decorator(stage, getMainPage(), Main.TITLE, false, true);
+        stage.setOnCloseRequest(e -> Launcher.stopApplication());
+
+        decorator = new Decorator(stage, getMainPage(), Launcher.TITLE, false, true);
         decorator.showPage(null);
         leftPaneController = new LeftPaneController(decorator.getLeftPane());
 
@@ -110,7 +114,7 @@ public final class Controllers {
         stage.setMaxHeight(521);
 
         stage.getIcons().add(new Image("/assets/img/icon.png"));
-        stage.setTitle(Main.TITLE);
+        stage.setTitle(Launcher.TITLE);
     }
 
     public static Region getDialogContent() {
@@ -119,7 +123,7 @@ public final class Controllers {
 
     public static JFXDialog dialog(Region content) {
         // TODO: temp fix
-        decorator.showDialog(new Region());
+        decorator.showDialog(Lang.apply(new Region(), region -> region.getProperties().put("controllers", true)));
         return decorator.showDialog(content);
     }
 
@@ -147,12 +151,15 @@ public final class Controllers {
         dialog(new InputDialogPane(text, decorator.getDialog(), onResult));
     }
 
+    public static void taskDialog(TaskExecutor executor, String title, String subtitle) {
+        taskDialog(executor, title, subtitle, null);
+    }
+
     public static void taskDialog(TaskExecutor executor, String title, String subtitle, Runnable onCancel) {
         TaskExecutorDialogPane pane = new TaskExecutorDialogPane(onCancel);
         pane.setTitle(title);
         pane.setSubtitle(subtitle);
         pane.setExecutor(executor);
-        executor.start();
         dialog(pane);
     }
 
@@ -168,7 +175,7 @@ public final class Controllers {
     }
 
     public static void showUpdate() {
-        getDecorator().showUpdate();
+        getLeftPaneController().showUpdate();
     }
 
     public static void shutdown() {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/CrashWindow.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/CrashWindow.java
index e9e4eb16c..285c6e640 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/CrashWindow.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/CrashWindow.java
@@ -27,7 +27,7 @@ import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
 import javafx.stage.Stage;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 
 /**
  * @author huangyuhui
@@ -36,10 +36,10 @@ public class CrashWindow extends Stage {
 
     public CrashWindow(String text) {
         Label lblCrash = new Label();
-        if (Main.UPDATE_CHECKER.isOutOfDate())
-            lblCrash.setText(Main.i18n("launcher.crash_out_dated"));
+        if (Launcher.UPDATE_CHECKER.isOutOfDate())
+            lblCrash.setText(Launcher.i18n("launcher.crash_out_dated"));
         else
-            lblCrash.setText(Main.i18n("launcher.crash"));
+            lblCrash.setText(Launcher.i18n("launcher.crash"));
         lblCrash.setWrapText(true);
 
         TextArea textArea = new TextArea();
@@ -47,8 +47,8 @@ public class CrashWindow extends Stage {
         textArea.setEditable(false);
 
         Button btnContact = new Button();
-        btnContact.setText(Main.i18n("launcher.contact"));
-        btnContact.setOnMouseClicked(event -> FXUtils.openLink(Main.CONTACT));
+        btnContact.setText(Launcher.i18n("launcher.contact"));
+        btnContact.setOnMouseClicked(event -> FXUtils.openLink(Launcher.CONTACT));
         HBox box = new HBox();
         box.setStyle("-fx-padding: 8px;");
         box.getChildren().add(btnContact);
@@ -65,7 +65,7 @@ public class CrashWindow extends Stage {
         Scene scene = new Scene(pane, 800, 480);
         setScene(scene);
         getIcons().add(new Image("/assets/img/icon.png"));
-        setTitle(Main.i18n("message.error"));
+        setTitle(Launcher.i18n("message.error"));
 
         setOnCloseRequest(e -> System.exit(1));
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Decorator.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Decorator.java
index 096a39c56..863fb4c3d 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/Decorator.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/Decorator.java
@@ -17,6 +17,7 @@
  */
 package org.jackhuang.hmcl.ui;
 
+import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.JFXButton;
 import com.jfoenix.controls.JFXDialog;
 import com.jfoenix.controls.JFXDrawer;
@@ -45,7 +46,7 @@ import javafx.scene.shape.Rectangle;
 import javafx.stage.Screen;
 import javafx.stage.Stage;
 import javafx.stage.StageStyle;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.EnumBackgroundImage;
 import org.jackhuang.hmcl.setting.Settings;
 import org.jackhuang.hmcl.setting.Theme;
@@ -53,6 +54,7 @@ import org.jackhuang.hmcl.ui.animation.AnimationProducer;
 import org.jackhuang.hmcl.ui.animation.ContainerAnimations;
 import org.jackhuang.hmcl.ui.animation.TransitionHandler;
 import org.jackhuang.hmcl.ui.construct.AdvancedListBox;
+import org.jackhuang.hmcl.ui.construct.StackContainerPane;
 import org.jackhuang.hmcl.ui.construct.TaskExecutorDialogWizardDisplayer;
 import org.jackhuang.hmcl.ui.wizard.*;
 import org.jackhuang.hmcl.util.FileUtils;
@@ -74,7 +76,7 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
     private static final SVGGlyph close = Lang.apply(new SVGGlyph(0, "CLOSE", "M810 274l-238 238 238 238-60 60-238-238-238 238-60-60 238-238-238-238 60-60 238 238 238-238z", Color.WHITE),
             glyph -> { glyph.setPrefSize(12, 12); glyph.setSize(12, 12); });
 
-    private final ObjectProperty<Runnable> onCloseButtonAction = new SimpleObjectProperty<>(Main::stopApplication);
+    private final ObjectProperty<Runnable> onCloseButtonAction;
     private final BooleanProperty customMaximize = new SimpleBooleanProperty(false);
 
     private final Stage primaryStage;
@@ -82,11 +84,13 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
     private final boolean max, min;
     private final WizardController wizardController = new WizardController(this);
     private final Queue<Object> cancelQueue = new ConcurrentLinkedQueue<>();
+    private final JFXDialog dialog;
 
     private double xOffset, yOffset, newX, newY, initX, initY;
-    private boolean allowMove, isDragging, dialogShown, maximized;
+    private boolean allowMove, isDragging, maximized;
     private BoundingBox originalBox, maximizedBox;
     private final TransitionHandler animationHandler;
+    private final StackContainerPane dialogPane = new StackContainerPane();
 
     @FXML
     private StackPane contentPlaceHolder;
@@ -119,16 +123,12 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
     @FXML
     private JFXHamburger titleBurger;
     @FXML
-    private JFXDialog dialog;
-    @FXML
     private JFXButton btnMin;
     @FXML
     private JFXButton btnMax;
     @FXML
     private JFXButton btnClose;
     @FXML
-    private HBox updatePane;
-    @FXML
     private HBox navLeft;
 
     public Decorator(Stage primaryStage, Node mainPage, String title) {
@@ -143,8 +143,7 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
 
         FXUtils.loadFXML(this, "/assets/fxml/decorator.fxml");
 
-        updatePane.setCursor(Cursor.HAND);
-        updatePane.setOnMouseClicked(event -> Main.UPDATE_CHECKER.checkOutdate());
+        onCloseButtonAction = new SimpleObjectProperty<>(this, "onCloseButtonAction", Launcher::stopApplication);
 
         primaryStage.initStyle(StageStyle.UNDECORATED);
         btnClose.setGraphic(close);
@@ -168,9 +167,21 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
                 btnMax.fire();
         });
 
+        dialog = new JFXDialog() {
+            @Override
+            public void close() {
+                dialogPane.pop();
+                if (dialogPane.getChildren().isEmpty())
+                    Platform.runLater(() -> {
+                        if (dialogPane.getChildren().isEmpty())
+                            super.close();
+                    });
+            }
+        };
+        dialog.setOverlayClose(false);
+        drawerWrapper.getChildren().add(0, dialog);
         dialog.setDialogContainer(drawerWrapper);
-        dialog.setOnDialogClosed(e -> dialogShown = false);
-        dialog.setOnDialogOpened(e -> dialogShown = true);
+        dialog.setContent(dialogPane);
 
         if (!min) buttonsContainer.getChildren().remove(btnMin);
         if (!max) buttonsContainer.getChildren().remove(btnMax);
@@ -474,10 +485,6 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
         }
     }
 
-    public void showUpdate() {
-        updatePane.setVisible(true);
-    }
-
     private void showCloseNavButton() {
         navLeft.getChildren().add(closeNavButton);
     }
@@ -538,10 +545,10 @@ public final class Decorator extends StackPane implements TaskExecutorDialogWiza
         }
     }
 
-    public JFXDialog showDialog(Region content) {
-        dialog.setContent(content);
-        if (!dialogShown)
+    public JFXDialog showDialog(Node node) {
+        if (dialogPane.isEmpty())
             dialog.show();
+        dialogPane.push(node);
         return dialog;
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/DialogController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/DialogController.java
index 97325326c..f3d7c48e2 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/DialogController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/DialogController.java
@@ -37,11 +37,7 @@ public final class DialogController {
                 AccountLoginPane pane = new AccountLoginPane(account, it -> {
                         res.set(it);
                         latch.countDown();
-                        Controllers.closeDialog();
-                }, () -> {
-                        latch.countDown();
-                        Controllers.closeDialog();
-                });
+                }, latch::countDown);
                 pane.setDialog(Controllers.dialog(pane));
             });
             latch.await();
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java
index b8ddba831..d62349ce6 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/FXUtils.java
@@ -23,6 +23,7 @@ import javafx.animation.Animation;
 import javafx.animation.Interpolator;
 import javafx.animation.KeyFrame;
 import javafx.animation.Timeline;
+import javafx.application.Platform;
 import javafx.beans.property.Property;
 import javafx.beans.value.ChangeListener;
 import javafx.beans.value.ObservableValue;
@@ -41,14 +42,17 @@ import javafx.scene.input.ScrollEvent;
 import javafx.scene.layout.Region;
 import javafx.scene.shape.Rectangle;
 import javafx.util.Duration;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.util.*;
 
 import java.io.File;
 import java.io.IOException;
 import java.net.URI;
 import java.util.List;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.atomic.AtomicReference;
 import java.util.function.Consumer;
+import java.util.function.Supplier;
 import java.util.logging.Level;
 
 import static org.jackhuang.hmcl.util.ReflectionHelper.call;
@@ -184,7 +188,7 @@ public final class FXUtils {
     }
 
     public static void loadFXML(Node node, String absolutePath) {
-        FXMLLoader loader = new FXMLLoader(node.getClass().getResource(absolutePath), Main.RESOURCE_BUNDLE);
+        FXMLLoader loader = new FXMLLoader(node.getClass().getResource(absolutePath), Launcher.RESOURCE_BUNDLE);
         loader.setRoot(node);
         loader.setController(node);
         Lang.invoke((ExceptionalSupplier<Object, IOException>) loader::load);
@@ -368,6 +372,31 @@ public final class FXUtils {
         });
     }
 
+    public static <T> T runInUIThread(Supplier<T> supplier) {
+        if (javafx.application.Platform.isFxApplicationThread()) {
+            return supplier.get();
+        } else {
+            CountDownLatch doneLatch = new CountDownLatch(1);
+            AtomicReference<T> reference = new AtomicReference<>();
+            Platform.runLater(() -> {
+                try {
+                    reference.set(supplier.get());
+                } finally {
+                    doneLatch.countDown();
+                }
+
+            });
+
+            try {
+                doneLatch.await();
+            } catch (InterruptedException var3) {
+                Thread.currentThread().interrupt();
+            }
+
+            return reference.get();
+        }
+    }
+
     public static final Image DEFAULT_ICON = new Image("/assets/img/icon.png");
 
     public static final Interpolator SINE = new Interpolator() {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerController.java
index 10c614e0d..4a5ce5886 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerController.java
@@ -20,6 +20,7 @@ package org.jackhuang.hmcl.ui;
 import javafx.fxml.FXML;
 import javafx.scene.control.ScrollPane;
 import javafx.scene.layout.VBox;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.MaintainTask;
 import org.jackhuang.hmcl.download.game.VersionJsonSaveTask;
 import org.jackhuang.hmcl.game.GameVersion;
@@ -89,7 +90,7 @@ public class InstallerController {
         Optional<String> gameVersion = GameVersion.minecraftVersion(profile.getRepository().getVersionJar(version));
 
         if (!gameVersion.isPresent())
-            Controllers.dialog("version.cannot_read");
+            Controllers.dialog(Launcher.i18n("version.cannot_read"));
         else
             Controllers.getDecorator().startWizard(new InstallerWizardProvider(profile, gameVersion.get(), version, forge, liteLoader, optiFine));
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerItem.java
index f227d90ca..225b8d8df 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/InstallerItem.java
@@ -21,7 +21,7 @@ import com.jfoenix.effects.JFXDepthManager;
 import javafx.fxml.FXML;
 import javafx.scene.control.Label;
 import javafx.scene.layout.BorderPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 
 import java.util.function.Consumer;
 
@@ -44,7 +44,7 @@ public class InstallerItem extends BorderPane {
         setStyle("-fx-background-radius: 2; -fx-background-color: white; -fx-padding: 8;");
         JFXDepthManager.setDepth(this, 1);
         lblInstallerArtifact.setText(artifact);
-        lblInstallerVersion.setText(Main.i18n("archive.version") + ": " + version);
+        lblInstallerVersion.setText(Launcher.i18n("archive.version") + ": " + version);
     }
 
     @FXML
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/LeftPaneController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/LeftPaneController.java
index b67caaf05..6b845f048 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/LeftPaneController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/LeftPaneController.java
@@ -19,27 +19,26 @@ package org.jackhuang.hmcl.ui;
 
 import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.JFXButton;
+import com.jfoenix.controls.JFXPopup;
 import javafx.application.Platform;
 import javafx.scene.Node;
+import javafx.scene.control.Tooltip;
 import javafx.scene.image.Image;
-import javafx.scene.layout.BorderPane;
+import javafx.scene.input.MouseButton;
 import javafx.scene.layout.VBox;
-import javafx.scene.text.Text;
-import org.jackhuang.hmcl.Main;
+import javafx.scene.paint.Color;
+import org.jackhuang.hmcl.Launcher;
+import org.jackhuang.hmcl.auth.Account;
+import org.jackhuang.hmcl.auth.authlibinjector.AuthlibInjectorAccount;
+import org.jackhuang.hmcl.auth.offline.OfflineAccount;
 import org.jackhuang.hmcl.auth.yggdrasil.YggdrasilAccount;
-import org.jackhuang.hmcl.event.EventBus;
-import org.jackhuang.hmcl.event.ProfileChangedEvent;
-import org.jackhuang.hmcl.event.ProfileLoadingEvent;
-import org.jackhuang.hmcl.event.RefreshedVersionsEvent;
+import org.jackhuang.hmcl.event.*;
 import org.jackhuang.hmcl.game.AccountHelper;
 import org.jackhuang.hmcl.game.HMCLGameRepository;
 import org.jackhuang.hmcl.game.ModpackHelper;
 import org.jackhuang.hmcl.mod.Modpack;
 import org.jackhuang.hmcl.mod.UnsupportedModpackException;
-import org.jackhuang.hmcl.setting.Profile;
-import org.jackhuang.hmcl.setting.Profiles;
-import org.jackhuang.hmcl.setting.Settings;
-import org.jackhuang.hmcl.setting.Theme;
+import org.jackhuang.hmcl.setting.*;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.ui.construct.AdvancedListBox;
@@ -55,50 +54,56 @@ import java.util.Objects;
 public final class LeftPaneController {
     private final AdvancedListBox leftPane;
     private final VBox profilePane = new VBox();
-    private final VersionListItem accountItem = new VersionListItem("", "");
+    private final VBox accountPane = new VBox();
+    private final IconedItem launcherSettingsItem;
+    private final VersionListItem missingAccountItem = new VersionListItem(Launcher.i18n("account.missing"), Launcher.i18n("message.unknown"));
 
     public LeftPaneController(AdvancedListBox leftPane) {
         this.leftPane = leftPane;
 
-        leftPane.startCategory(Main.i18n("account").toUpperCase())
-                .add(Lang.apply(new RipplerContainer(accountItem), rippler -> {
-                    rippler.setOnMouseClicked(e -> Controllers.navigate(new AccountsPage()));
-                    accountItem.setOnSettingsButtonClicked(() -> Controllers.navigate(new AccountsPage()));
-                }))
-                .startCategory(Main.i18n("launcher").toUpperCase())
-                .add(Lang.apply(new IconedItem(SVG.gear(Theme.blackFillBinding(), 20, 20), Main.i18n("settings.launcher")), iconedItem -> {
-                    iconedItem.prefWidthProperty().bind(leftPane.widthProperty());
-                    iconedItem.setOnMouseClicked(e -> Controllers.navigate(Controllers.getSettingsPage()));
-                }))
-                .add(new ClassTitle(Lang.apply(new BorderPane(), borderPane -> {
-                    borderPane.setLeft(Lang.apply(new VBox(), vBox -> vBox.getChildren().setAll(new Text(Main.i18n("profile.title").toUpperCase()))));
-                    JFXButton addProfileButton = new JFXButton();
-                    addProfileButton.setGraphic(SVG.plus(Theme.blackFillBinding(), 10, 10));
-                    addProfileButton.getStyleClass().add("toggle-icon-tiny");
-                    addProfileButton.setOnMouseClicked(e ->
+        this.launcherSettingsItem = Lang.apply(new IconedItem(SVG.gear(Theme.blackFillBinding(), 20, 20), Launcher.i18n("settings.launcher")), iconedItem -> {
+            iconedItem.prefWidthProperty().bind(leftPane.widthProperty());
+            iconedItem.setOnMouseClicked(e -> Controllers.navigate(Controllers.getSettingsPage()));
+        });
+
+        leftPane
+                .add(new ClassTitle(Launcher.i18n("account").toUpperCase(), Lang.apply(new JFXButton(), button -> {
+                    button.setGraphic(SVG.plus(Theme.blackFillBinding(), 10, 10));
+                    button.getStyleClass().add("toggle-icon-tiny");
+                    button.setOnMouseClicked(e -> addNewAccount());
+                })))
+                .add(accountPane)
+                .startCategory(Launcher.i18n("launcher").toUpperCase())
+                .add(launcherSettingsItem)
+                .add(new ClassTitle(Launcher.i18n("profile.title").toUpperCase(), Lang.apply(new JFXButton(), button -> {
+                    button.setGraphic(SVG.plus(Theme.blackFillBinding(), 10, 10));
+                    button.getStyleClass().add("toggle-icon-tiny");
+                    button.setOnMouseClicked(e ->
                             Controllers.getDecorator().showPage(new ProfilePage(null)));
-                    borderPane.setRight(addProfileButton);
                 })))
                 .add(profilePane);
 
+        EventBus.EVENT_BUS.channel(AccountLoadingEvent.class).register(this::onAccountsLoading);
         EventBus.EVENT_BUS.channel(ProfileLoadingEvent.class).register(this::onProfilesLoading);
         EventBus.EVENT_BUS.channel(ProfileChangedEvent.class).register(this::onProfileChanged);
         EventBus.EVENT_BUS.channel(RefreshedVersionsEvent.class).register(this::onRefreshedVersions);
 
-        FXUtils.onChangeAndOperate(Settings.INSTANCE.selectedAccountProperty(), it -> {
-            if (it == null) {
-                accountItem.setVersionName(Main.i18n("account.missing"));
-                accountItem.setGameVersion(Main.i18n("message.unknown"));
-            } else {
-                accountItem.setVersionName(it.getCharacter());
-                accountItem.setGameVersion(AccountsPage.accountType(it));
-            }
+        FXUtils.onChangeAndOperate(Settings.INSTANCE.selectedAccountProperty(), this::onSelectedAccountChanged);
+        onAccountsLoading();
+    }
 
-            if (it instanceof YggdrasilAccount) {
-                Image image = AccountHelper.getSkin((YggdrasilAccount) it, 4);
-                accountItem.setImage(image, AccountHelper.getViewport(4));
-            } else
-                accountItem.setImage(AccountHelper.getDefaultSkin(it, 4), AccountHelper.getViewport(4));
+    private void addNewAccount() {
+        Controllers.dialog(new AddAccountPane(Controllers::closeDialog));
+    }
+
+    private void onSelectedAccountChanged(Account newAccount) {
+        Platform.runLater(() -> {
+            for (Node node : accountPane.getChildren()) {
+                if (node instanceof RipplerContainer && node.getProperties().get("account") instanceof Account) {
+                    boolean current = Objects.equals(node.getProperties().get("account"), newAccount);
+                    ((RipplerContainer) node).setSelected(current);
+                }
+            }
         });
     }
 
@@ -110,7 +115,7 @@ public final class LeftPaneController {
                 if (node instanceof RipplerContainer && node.getProperties().get("profile") instanceof String) {
                     boolean current = Objects.equals(node.getProperties().get("profile"), profile.getName());
                     ((RipplerContainer) node).setSelected(current);
-                    ((VersionListItem) ((RipplerContainer) node).getContainer()).setGameVersion(current ? Main.i18n("profile.selected") : "");
+                    ((VersionListItem) ((RipplerContainer) node).getContainer()).setGameVersion(current ? Launcher.i18n("profile.selected") : "");
                 }
             }
         });
@@ -121,7 +126,7 @@ public final class LeftPaneController {
         for (Profile profile : Settings.INSTANCE.getProfiles()) {
             VersionListItem item = new VersionListItem(Profiles.getProfileDisplayName(profile));
             RipplerContainer ripplerContainer = new RipplerContainer(item);
-            item.setOnSettingsButtonClicked(() -> Controllers.getDecorator().showPage(new ProfilePage(profile)));
+            item.setOnSettingsButtonClicked(e -> Controllers.getDecorator().showPage(new ProfilePage(profile)));
             ripplerContainer.setOnMouseClicked(e -> Settings.INSTANCE.setSelectedProfile(profile));
             ripplerContainer.getProperties().put("profile", profile.getName());
             ripplerContainer.maxWidthProperty().bind(leftPane.widthProperty());
@@ -130,6 +135,62 @@ public final class LeftPaneController {
         Platform.runLater(() -> profilePane.getChildren().setAll(list));
     }
 
+    private static String accountType(Account account) {
+        if (account instanceof OfflineAccount) return Launcher.i18n("account.methods.offline");
+        else if (account instanceof YggdrasilAccount) return account.getUsername();
+        else throw new Error(Launcher.i18n("account.methods.no_method") + ": " + account);
+    }
+
+    private void onAccountsLoading() {
+        LinkedList<RipplerContainer> list = new LinkedList<>();
+        Account selectedAccount = Settings.INSTANCE.getSelectedAccount();
+        for (Account account : Settings.INSTANCE.getAccounts()) {
+            VersionListItem item = new VersionListItem(account.getCharacter(), accountType(account));
+            RipplerContainer ripplerContainer = new RipplerContainer(item);
+            item.setOnSettingsButtonClicked(e -> {
+                AccountPage accountPage = new AccountPage(account, item);
+                JFXPopup popup = new JFXPopup(accountPage);
+                accountPage.setOnDelete(popup::hide);
+                popup.show((Node) e.getSource(), JFXPopup.PopupVPosition.TOP, JFXPopup.PopupHPosition.LEFT, e.getX(), e.getY());
+            });
+            ripplerContainer.setOnMouseClicked(e -> {
+                if (e.getButton() == MouseButton.PRIMARY)
+                    Settings.INSTANCE.setSelectedAccount(account);
+            });
+            ripplerContainer.getProperties().put("account", account);
+            ripplerContainer.maxWidthProperty().bind(leftPane.widthProperty());
+
+            if (account instanceof YggdrasilAccount) {
+                Image image = AccountHelper.getSkin((YggdrasilAccount) account, 4);
+                item.setImage(image, AccountHelper.getViewport(4));
+            } else
+                item.setImage(AccountHelper.getDefaultSkin(account, 4), AccountHelper.getViewport(4));
+
+            if (account instanceof AuthlibInjectorAccount)
+                Accounts.getAuthlibInjectorServerNameAsync((AuthlibInjectorAccount) account)
+                    .subscribe(Schedulers.javafx(), variables -> FXUtils.installTooltip(ripplerContainer, 500, 5000, 0, new Tooltip(variables.get("serverName"))));
+
+            if (selectedAccount == account)
+                ripplerContainer.setSelected(true);
+
+            list.add(ripplerContainer);
+        }
+
+        if (Settings.INSTANCE.getAccounts().isEmpty()) {
+            RipplerContainer container = new RipplerContainer(missingAccountItem);
+            missingAccountItem.setOnSettingsButtonClicked(e -> addNewAccount());
+            container.setOnMouseClicked(e -> addNewAccount());
+            list.add(container);
+        }
+
+        Platform.runLater(() -> accountPane.getChildren().setAll(list));
+    }
+
+    public void showUpdate() {
+        launcherSettingsItem.setText(Launcher.i18n("update.found"));
+        launcherSettingsItem.setTextFill(Color.RED);
+    }
+
     private boolean checkedModpack = false;
 
     private void onRefreshedVersions(RefreshedVersionsEvent event) {
@@ -148,8 +209,8 @@ public final class LeftPaneController {
                                             .with(Task.of(Schedulers.javafx(), () -> {
                                                 Controllers.closeDialog();
                                                 checkAccount();
-                                            })).executor(),
-                                    Main.i18n("modpack.installing"), "", null);
+                                            })).executor(true),
+                                    Launcher.i18n("modpack.installing"), "", null);
                             flag = false;
                         } catch (UnsupportedModpackException ignore) {
                         }
@@ -162,8 +223,8 @@ public final class LeftPaneController {
         });
     }
 
-    private void checkAccount() {
+    public void checkAccount() {
         if (Settings.INSTANCE.getAccounts().isEmpty())
-            Controllers.navigate(new AccountsPage());
+            addNewAccount();
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/LogWindow.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/LogWindow.java
index 1547b138e..7801ef900 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/LogWindow.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/LogWindow.java
@@ -30,7 +30,7 @@ import javafx.scene.layout.StackPane;
 import javafx.scene.web.WebEngine;
 import javafx.scene.web.WebView;
 import javafx.stage.Stage;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.event.Event;
 import org.jackhuang.hmcl.event.EventManager;
 import org.jackhuang.hmcl.game.LauncherHelper;
@@ -63,7 +63,7 @@ public final class LogWindow extends Stage {
     public LogWindow() {
         setScene(new Scene(impl, 800, 480));
         getScene().getStylesheets().addAll(Settings.INSTANCE.getTheme().getStylesheets());
-        setTitle(Main.i18n("logwindow.title"));
+        setTitle(Launcher.i18n("logwindow.title"));
         getIcons().add(new Image("/assets/img/icon.png"));
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/MainPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/MainPage.java
index 29c7c00a2..c69ded871 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/MainPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/MainPage.java
@@ -18,10 +18,7 @@
 package org.jackhuang.hmcl.ui;
 
 import com.jfoenix.concurrency.JFXUtilities;
-import com.jfoenix.controls.JFXButton;
-import com.jfoenix.controls.JFXListView;
-import com.jfoenix.controls.JFXMasonryPane;
-import com.jfoenix.controls.JFXPopup;
+import com.jfoenix.controls.*;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.fxml.FXML;
@@ -30,10 +27,11 @@ import javafx.scene.image.Image;
 import javafx.scene.input.MouseButton;
 import javafx.scene.layout.StackPane;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.event.EventBus;
 import org.jackhuang.hmcl.event.ProfileChangedEvent;
 import org.jackhuang.hmcl.event.RefreshedVersionsEvent;
+import org.jackhuang.hmcl.event.RefreshingVersionsEvent;
 import org.jackhuang.hmcl.game.*;
 import org.jackhuang.hmcl.mod.MismatchedModpackTypeException;
 import org.jackhuang.hmcl.mod.UnsupportedModpackException;
@@ -46,54 +44,58 @@ import org.jackhuang.hmcl.ui.construct.MessageBox;
 import org.jackhuang.hmcl.ui.construct.TaskExecutorDialogPane;
 import org.jackhuang.hmcl.ui.download.DownloadWizardProvider;
 import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
+import org.jackhuang.hmcl.util.Lang;
 import org.jackhuang.hmcl.util.OperatingSystem;
 import org.jackhuang.hmcl.util.StringUtils;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.Collections;
 import java.util.LinkedList;
 import java.util.List;
 
 public final class MainPage extends StackPane implements DecoratorPage {
 
-    private final StringProperty title = new SimpleStringProperty(this, "title", Main.i18n("main_page"));
+    private final StringProperty title = new SimpleStringProperty(this, "title", Launcher.i18n("main_page"));
 
     private Profile profile;
-    private String rightClickedVersion;
 
     @FXML
     private JFXButton btnRefresh;
-
+    @FXML
+    private StackPane contentPane;
     @FXML
     private JFXButton btnAdd;
-
+    @FXML
+    private JFXSpinner spinner;
     @FXML
     private JFXMasonryPane masonryPane;
 
-    @FXML
-    private JFXListView versionList;
-
-    private final JFXPopup versionPopup;
-
     {
         FXUtils.loadFXML(this, "/assets/fxml/main.fxml");
 
+        loadingVersions();
+
         EventBus.EVENT_BUS.channel(RefreshedVersionsEvent.class).register(event -> {
             if (event.getSource() == profile.getRepository())
                 loadVersions((HMCLGameRepository) event.getSource());
         });
-        EventBus.EVENT_BUS.channel(ProfileChangedEvent.class).register(event -> this.profile = event.getProfile());
+        EventBus.EVENT_BUS.channel(RefreshingVersionsEvent.class).register(event -> {
+            if (event.getSource() == profile.getRepository())
+                JFXUtilities.runInFXAndWait(this::loadingVersions);
+        });
+        EventBus.EVENT_BUS.channel(ProfileChangedEvent.class).register(event -> {
+            this.profile = event.getProfile();
+        });
 
-        versionPopup = new JFXPopup(versionList);
-        getChildren().remove(versionList);
-
-        btnAdd.setOnMouseClicked(e -> Controllers.getDecorator().startWizard(new DownloadWizardProvider(), Main.i18n("install")));
-        FXUtils.installTooltip(btnAdd, Main.i18n("install"));
+        btnAdd.setOnMouseClicked(e -> Controllers.getDecorator().startWizard(new DownloadWizardProvider(), Launcher.i18n("install")));
+        FXUtils.installTooltip(btnAdd, Launcher.i18n("install"));
         btnRefresh.setOnMouseClicked(e -> Settings.INSTANCE.getSelectedProfile().getRepository().refreshVersionsAsync().start());
-        FXUtils.installTooltip(btnRefresh, Main.i18n("button.refresh"));
+        FXUtils.installTooltip(btnRefresh, Launcher.i18n("button.refresh"));
     }
 
     private Node buildNode(HMCLGameRepository repository, Version version, String game) {
+        Profile profile = repository.getProfile();
         String id = version.getId();
         VersionItem item = new VersionItem();
         item.setUpdate(repository.isModpack(id));
@@ -103,36 +105,37 @@ public final class MainPage extends StackPane implements DecoratorPage {
         StringBuilder libraries = new StringBuilder();
         for (Library library : version.getLibraries()) {
             if (library.getGroupId().equalsIgnoreCase("net.minecraftforge") && library.getArtifactId().equalsIgnoreCase("forge")) {
-                libraries.append(Main.i18n("install.installer.forge")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)forge", "").replace(game, "").trim(), "-"), "-")).append("\n");
+                libraries.append(Launcher.i18n("install.installer.forge")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)forge", "").replace(game, "").trim(), "-"), "-")).append("\n");
             }
             if (library.getGroupId().equalsIgnoreCase("com.mumfrey") && library.getArtifactId().equalsIgnoreCase("liteloader")) {
-                libraries.append(Main.i18n("install.installer.liteloader")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)liteloader", "").replace(game, "").trim(), "-"), "-")).append("\n");
+                libraries.append(Launcher.i18n("install.installer.liteloader")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)liteloader", "").replace(game, "").trim(), "-"), "-")).append("\n");
             }
             if (library.getGroupId().equalsIgnoreCase("net.optifine") && library.getArtifactId().equalsIgnoreCase("optifine")) {
-                libraries.append(Main.i18n("install.installer.optifine")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)optifine", "").replace(game, "").trim(), "-"), "-")).append("\n");
+                libraries.append(Launcher.i18n("install.installer.optifine")).append(": ").append(StringUtils.removeSuffix(StringUtils.removePrefix(library.getVersion().replaceAll("(?i)optifine", "").replace(game, "").trim(), "-"), "-")).append("\n");
             }
         }
 
         item.setLibraries(libraries.toString());
         item.setOnLaunchButtonClicked(e -> {
             if (Settings.INSTANCE.getSelectedAccount() == null)
-                Controllers.dialog(Main.i18n("login.empty_username"));
+                Controllers.getLeftPaneController().checkAccount();
             else
-                LauncherHelper.INSTANCE.launch(id, null);
+                LauncherHelper.INSTANCE.launch(profile, Settings.INSTANCE.getSelectedAccount(), id, null);
         });
         item.setOnScriptButtonClicked(e -> {
             if (Settings.INSTANCE.getSelectedAccount() == null)
-                Controllers.dialog(Main.i18n("login.empty_username"));
+                Controllers.dialog(Launcher.i18n("login.empty_username"));
             else {
                 FileChooser chooser = new FileChooser();
-                chooser.setInitialDirectory(repository.getRunDirectory(id));
-                chooser.setTitle(Main.i18n("version.launch_script.save"));
+                if (repository.getRunDirectory(id).isDirectory())
+                    chooser.setInitialDirectory(repository.getRunDirectory(id));
+                chooser.setTitle(Launcher.i18n("version.launch_script.save"));
                 chooser.getExtensionFilters().add(OperatingSystem.CURRENT_OS == OperatingSystem.WINDOWS
-                        ? new FileChooser.ExtensionFilter(Main.i18n("extension.bat"), "*.bat")
-                        : new FileChooser.ExtensionFilter(Main.i18n("extension.sh"), "*.sh"));
+                        ? new FileChooser.ExtensionFilter(Launcher.i18n("extension.bat"), "*.bat")
+                        : new FileChooser.ExtensionFilter(Launcher.i18n("extension.sh"), "*.sh"));
                 File file = chooser.showSaveDialog(Controllers.getStage());
                 if (file != null)
-                    LauncherHelper.INSTANCE.launch(id, file);
+                    LauncherHelper.INSTANCE.launch(profile, Settings.INSTANCE.getSelectedAccount(), id, file);
             }
         });
         item.setOnSettingsButtonClicked(e -> {
@@ -141,37 +144,62 @@ public final class MainPage extends StackPane implements DecoratorPage {
         });
         item.setOnUpdateButtonClicked(event -> {
             FileChooser chooser = new FileChooser();
-            chooser.setTitle(Main.i18n("modpack.choose"));
-            chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Main.i18n("modpack"), "*.zip"));
+            chooser.setTitle(Launcher.i18n("modpack.choose"));
+            chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Launcher.i18n("modpack"), "*.zip"));
             File selectedFile = chooser.showOpenDialog(Controllers.getStage());
             if (selectedFile != null) {
-                TaskExecutorDialogPane pane = new TaskExecutorDialogPane(null);
                 try {
                     TaskExecutor executor = ModpackHelper.getUpdateTask(profile, selectedFile, id, ModpackHelper.readModpackConfiguration(repository.getModpackConfiguration(id)))
-                            .then(Task.of(Schedulers.javafx(), Controllers::closeDialog)).executor();
-                    pane.setExecutor(executor);
-                    pane.setTitle(Main.i18n("modpack.update"));
-                    executor.start();
-                    Controllers.dialog(pane);
+                            .then(Task.of(Schedulers.javafx(), Controllers::closeDialog)).executor(true);
+                    Controllers.taskDialog(executor, Launcher.i18n("modpack.update"), "", null);
                 } catch (UnsupportedModpackException e) {
-                    Controllers.dialog(Main.i18n("modpack.unsupported"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE);
+                    Controllers.closeDialog();
+                    Controllers.dialog(Launcher.i18n("modpack.unsupported"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE);
                 } catch (MismatchedModpackTypeException e) {
-                    Controllers.dialog(Main.i18n("modpack.mismatched_type"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE);
+                    Controllers.closeDialog();
+                    Controllers.dialog(Launcher.i18n("modpack.mismatched_type"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE);
                 } catch (IOException e)  {
-                    Controllers.dialog(Main.i18n("modpack.invalid"), Main.i18n("message.error"), MessageBox.ERROR_MESSAGE);
+                    Controllers.closeDialog();
+                    Controllers.dialog(Launcher.i18n("modpack.invalid"), Launcher.i18n("message.error"), MessageBox.ERROR_MESSAGE);
                 }
             }
         });
         item.setOnMouseClicked(event -> {
             if (event.getButton() == MouseButton.SECONDARY) {
-                rightClickedVersion = id;
-                versionList.getSelectionModel().select(-1);
+                JFXListView<String> versionList = new JFXListView<>();
+                JFXPopup versionPopup = new JFXPopup(versionList);
+                versionList.getStyleClass().add("option-list-view");
+                FXUtils.setLimitWidth(versionList, 150);
+                versionList.getItems().setAll(Lang.immutableListOf(
+                        Launcher.i18n("version.manage.rename"),
+                        Launcher.i18n("version.manage.remove"),
+                        Launcher.i18n("modpack.export"),
+                        Launcher.i18n("folder.game")
+                ));
+                versionList.setOnMouseClicked(e ->{
+                    versionPopup.hide();
+                    switch (versionList.getSelectionModel().getSelectedIndex()) {
+                        case 0:
+                            VersionPage.renameVersion(profile, id);
+                            break;
+                        case 1:
+                            VersionPage.deleteVersion(profile, id);
+                            break;
+                        case 2:
+                            VersionPage.exportVersion(profile, id);
+                            break;
+                        case 3:
+                            FXUtils.openFolder(repository.getRunDirectory(id));
+                            break;
+                        default:
+                            throw new Error();
+                    }});
                 versionPopup.show(item, JFXPopup.PopupVPosition.TOP, JFXPopup.PopupHPosition.LEFT, event.getX(), event.getY());
             } else if (event.getButton() == MouseButton.PRIMARY && event.getClickCount() == 2) {
                 if (Settings.INSTANCE.getSelectedAccount() == null)
-                    Controllers.dialog(Main.i18n("login.empty_username"));
+                    Controllers.dialog(Launcher.i18n("login.empty_username"));
                 else
-                    LauncherHelper.INSTANCE.launch(id, null);
+                    LauncherHelper.INSTANCE.launch(profile, Settings.INSTANCE.getSelectedAccount(), id, null);
             }
         });
         File iconFile = repository.getVersionIcon(id);
@@ -180,33 +208,22 @@ public final class MainPage extends StackPane implements DecoratorPage {
         return item;
     }
 
+    private void loadingVersions() {
+        getChildren().setAll(spinner);
+        FXUtils.resetChildren(masonryPane, Collections.emptyList());
+    }
+
     private void loadVersions(HMCLGameRepository repository) {
         List<Node> children = new LinkedList<>();
         for (Version version : repository.getVersions()) {
             children.add(buildNode(repository, version, GameVersion.minecraftVersion(repository.getVersionJar(version.getId())).orElse("Unknown")));
         }
-        JFXUtilities.runInFX(() -> FXUtils.resetChildren(masonryPane, children));
-    }
-
-    @FXML
-    private void onVersionManagement() {
-        versionPopup.hide();
-        switch (versionList.getSelectionModel().getSelectedIndex()) {
-            case 0:
-                VersionPage.renameVersion(profile, rightClickedVersion);
-                break;
-            case 1:
-                VersionPage.deleteVersion(profile, rightClickedVersion);
-                break;
-            case 2:
-                VersionPage.exportVersion(profile, rightClickedVersion);
-                break;
-            case 3:
-                FXUtils.openFolder(profile.getRepository().getRunDirectory(rightClickedVersion));
-                break;
-            default:
-                throw new Error();
-        }
+        JFXUtilities.runInFX(() -> {
+            if (profile == repository.getProfile()) {
+                getChildren().setAll(contentPane);
+                FXUtils.resetChildren(masonryPane, children);
+            }
+        });
     }
 
     public String getTitle() {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModController.java
index 6cea184f7..459e398f1 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModController.java
@@ -17,16 +17,16 @@
  */
 package org.jackhuang.hmcl.ui;
 
+import com.jfoenix.concurrency.JFXUtilities;
 import com.jfoenix.controls.JFXSpinner;
 import com.jfoenix.controls.JFXTabPane;
-import javafx.application.Platform;
 import javafx.fxml.FXML;
 import javafx.scene.control.ScrollPane;
 import javafx.scene.input.TransferMode;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.mod.ModInfo;
 import org.jackhuang.hmcl.mod.ModManager;
 import org.jackhuang.hmcl.task.Schedulers;
@@ -93,7 +93,7 @@ public final class ModController {
         this.versionId = versionId;
         Task.of(variables -> {
             synchronized (ModController.this) {
-                Platform.runLater(() -> {
+                JFXUtilities.runInFX(() -> {
                     rootPane.getChildren().remove(contentPane);
                     spinner.setVisible(true);
                 });
@@ -121,25 +121,24 @@ public final class ModController {
                     list.add(item);
                 }
 
-                Platform.runLater(() -> {
-                    rootPane.getChildren().add(contentPane);
-                    spinner.setVisible(false);
-                });
                 variables.set("list", list);
             }
-        }).finalized(Schedulers.javafx(), variables -> {
-            FXUtils.onWeakChangeAndOperate(parentTab.getSelectionModel().selectedItemProperty(), newValue -> {
-                if (newValue != null && newValue.getUserData() == ModController.this)
-                    modPane.getChildren().setAll(variables.<List<ModItem>>get("list"));
-            });
-        }, null).start();
+        }).finalized(Schedulers.javafx(), (variables, isDependentsSucceeded) -> {
+            rootPane.getChildren().add(contentPane);
+            spinner.setVisible(false);
+            if (isDependentsSucceeded)
+                FXUtils.onWeakChangeAndOperate(parentTab.getSelectionModel().selectedItemProperty(), newValue -> {
+                    if (newValue != null && newValue.getUserData() == ModController.this)
+                        modPane.getChildren().setAll(variables.<List<ModItem>>get("list"));
+                });
+        }).start();
     }
 
     @FXML
     private void onAdd() {
         FileChooser chooser = new FileChooser();
-        chooser.setTitle(Main.i18n("mods.choose_mod"));
-        chooser.getExtensionFilters().setAll(new FileChooser.ExtensionFilter(Main.i18n("extension.mod"), "*.jar", "*.zip", "*.litemod"));
+        chooser.setTitle(Launcher.i18n("mods.choose_mod"));
+        chooser.getExtensionFilters().setAll(new FileChooser.ExtensionFilter(Launcher.i18n("extension.mod"), "*.jar", "*.zip", "*.litemod"));
         List<File> res = chooser.showOpenMultipleDialog(Controllers.getStage());
 
         // It's guaranteed that succeeded and failed are thread safe here.
@@ -161,10 +160,10 @@ public final class ModController {
         }).with(Task.of(Schedulers.javafx(), variables -> {
             List<String> prompt = new LinkedList<>();
             if (!succeeded.isEmpty())
-                prompt.add(Main.i18n("mods.add.success", String.join(", ", succeeded)));
+                prompt.add(Launcher.i18n("mods.add.success", String.join(", ", succeeded)));
             if (!failed.isEmpty())
-                prompt.add(Main.i18n("mods.add.failed", String.join(", ", failed)));
-            Controllers.dialog(String.join("\n", prompt), Main.i18n("mods.add"));
+                prompt.add(Launcher.i18n("mods.add.failed", String.join(", ", failed)));
+            Controllers.dialog(String.join("\n", prompt), Launcher.i18n("mods.add"));
             loadMods(modManager, versionId);
         })).start();
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModItem.java
index 6c16b627b..7de389ad7 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ModItem.java
@@ -22,7 +22,7 @@ import com.jfoenix.controls.JFXCheckBox;
 import com.jfoenix.effects.JFXDepthManager;
 import javafx.geometry.Pos;
 import javafx.scene.layout.BorderPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.mod.ModInfo;
 import org.jackhuang.hmcl.setting.Theme;
 
@@ -40,7 +40,7 @@ public final class ModItem extends BorderPane {
         setCenter(modItem);
 
         JFXButton btnRemove = new JFXButton();
-        FXUtils.installTooltip(btnRemove, Main.i18n("mods.remove"));
+        FXUtils.installTooltip(btnRemove, Launcher.i18n("mods.remove"));
         btnRemove.setOnMouseClicked(e -> deleteCallback.accept(this));
         btnRemove.getStyleClass().add("toggle-icon4");
         BorderPane.setAlignment(btnRemove, Pos.CENTER);
@@ -50,7 +50,7 @@ public final class ModItem extends BorderPane {
         setStyle("-fx-background-radius: 2; -fx-background-color: white; -fx-padding: 8;");
         JFXDepthManager.setDepth(this, 1);
         modItem.setTitle(info.getFileName());
-        modItem.setSubtitle(info.getName() + ", " + Main.i18n("archive.version") + ": " + info.getVersion() + ", " + Main.i18n("archive.game_version") + ": " + info.getGameVersion() + ", " + Main.i18n("archive.author") + ": " + info.getAuthors());
+        modItem.setSubtitle(info.getName() + ", " + Launcher.i18n("archive.version") + ": " + info.getVersion() + ", " + Launcher.i18n("archive.game_version") + ": " + info.getGameVersion() + ", " + Launcher.i18n("archive.author") + ": " + info.getAuthors());
         chkEnabled.setSelected(info.isActive());
         chkEnabled.selectedProperty().addListener((a, b, newValue) ->
                 info.activeProperty().set(newValue));
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ProfilePage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ProfilePage.java
index 1384c1df7..c579d135d 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/ProfilePage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/ProfilePage.java
@@ -23,7 +23,7 @@ import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.fxml.FXML;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Profile;
 import org.jackhuang.hmcl.setting.Profiles;
 import org.jackhuang.hmcl.setting.Settings;
@@ -54,7 +54,7 @@ public final class ProfilePage extends StackPane implements DecoratorPage {
         String profileDisplayName = Optional.ofNullable(profile).map(Profiles::getProfileDisplayName).orElse("");
 
         title = new SimpleStringProperty(this, "title",
-                profile == null ? Main.i18n("profile.new") : Main.i18n("profile") + " - " + profileDisplayName);
+                profile == null ? Launcher.i18n("profile.new") : Launcher.i18n("profile") + " - " + profileDisplayName);
         location = new SimpleStringProperty(this, "location",
                 Optional.ofNullable(profile).map(Profile::getGameDir).map(File::getAbsolutePath).orElse(""));
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/SettingsPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/SettingsPage.java
index 3ae536068..16e28e2ab 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/SettingsPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/SettingsPage.java
@@ -34,9 +34,12 @@ import javafx.scene.layout.Pane;
 import javafx.scene.layout.StackPane;
 import javafx.scene.paint.Color;
 import javafx.scene.text.Font;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.*;
-import org.jackhuang.hmcl.ui.construct.*;
+import org.jackhuang.hmcl.ui.construct.FileItem;
+import org.jackhuang.hmcl.ui.construct.FontComboBox;
+import org.jackhuang.hmcl.ui.construct.MultiFileItem;
+import org.jackhuang.hmcl.ui.construct.Validator;
 import org.jackhuang.hmcl.ui.wizard.DecoratorPage;
 import org.jackhuang.hmcl.util.Lang;
 
@@ -46,7 +49,7 @@ import java.util.Collections;
 import java.util.stream.Collectors;
 
 public final class SettingsPage extends StackPane implements DecoratorPage {
-    private final StringProperty title = new SimpleStringProperty(this, "title", Main.i18n("settings.launcher"));
+    private final StringProperty title = new SimpleStringProperty(this, "title", Launcher.i18n("settings.launcher"));
 
     @FXML
     private JFXTextField txtProxyHost;
@@ -174,12 +177,12 @@ public final class SettingsPage extends StackPane implements DecoratorPage {
 
         fileCommonLocation.setProperty(Settings.INSTANCE.commonPathProperty());
 
-        FXUtils.installTooltip(btnUpdate, Main.i18n("update.tooltip"));
+        FXUtils.installTooltip(btnUpdate, Launcher.i18n("update.tooltip"));
         checkUpdate();
 
         // background
         backgroundItem.loadChildren(Collections.singletonList(
-                backgroundItem.createChildren(Main.i18n("launcher.background.default"), EnumBackgroundImage.DEFAULT)
+                backgroundItem.createChildren(Launcher.i18n("launcher.background.default"), EnumBackgroundImage.DEFAULT)
         ));
 
         FXUtils.bindString(backgroundItem.getTxtCustom(), Settings.INSTANCE.backgroundImageProperty());
@@ -196,8 +199,8 @@ public final class SettingsPage extends StackPane implements DecoratorPage {
 
         // theme
         JFXColorPicker picker = new JFXColorPicker(Color.web(Settings.INSTANCE.getTheme().getColor()), null);
-        picker.setCustomColorText(Main.i18n("color.custom"));
-        picker.setRecentColorsText(Main.i18n("color.recent"));
+        picker.setCustomColorText(Launcher.i18n("color.custom"));
+        picker.setRecentColorsText(Launcher.i18n("color.recent"));
         picker.getCustomColors().setAll(Arrays.stream(Theme.VALUES).map(Theme::getColor).map(Color::web).collect(Collectors.toList()));
         picker.setOnAction(e -> {
             Theme theme = Theme.custom(Theme.getColorDisplayName(picker.getValue()));
@@ -211,7 +214,7 @@ public final class SettingsPage extends StackPane implements DecoratorPage {
     private void initBackgroundItemSubtitle() {
         switch (Settings.INSTANCE.getBackgroundImageType()) {
             case DEFAULT:
-                backgroundItem.setSubtitle(Main.i18n("launcher.background.default"));
+                backgroundItem.setSubtitle(Launcher.i18n("launcher.background.default"));
                 break;
             case CUSTOM:
                 backgroundItem.setSubtitle(Settings.INSTANCE.getBackgroundImage());
@@ -233,25 +236,25 @@ public final class SettingsPage extends StackPane implements DecoratorPage {
     }
 
     public void checkUpdate() {
-        btnUpdate.setVisible(Main.UPDATE_CHECKER.isOutOfDate());
+        btnUpdate.setVisible(Launcher.UPDATE_CHECKER.isOutOfDate());
 
-        if (Main.UPDATE_CHECKER.isOutOfDate()) {
-            lblUpdateSub.setText(Main.i18n("update.newest_version", Main.UPDATE_CHECKER.getNewVersion().toString()));
+        if (Launcher.UPDATE_CHECKER.isOutOfDate()) {
+            lblUpdateSub.setText(Launcher.i18n("update.newest_version", Launcher.UPDATE_CHECKER.getNewVersion().toString()));
             lblUpdateSub.getStyleClass().setAll("update-label");
 
-            lblUpdate.setText(Main.i18n("update.found"));
+            lblUpdate.setText(Launcher.i18n("update.found"));
             lblUpdate.getStyleClass().setAll("update-label");
         } else {
-            lblUpdateSub.setText(Main.i18n("update.latest"));
+            lblUpdateSub.setText(Launcher.i18n("update.latest"));
             lblUpdateSub.getStyleClass().setAll("subtitle-label");
 
-            lblUpdate.setText(Main.i18n("update"));
+            lblUpdate.setText(Launcher.i18n("update"));
             lblUpdate.getStyleClass().setAll();
         }
     }
 
     @FXML
     private void onUpdate() {
-        Main.UPDATE_CHECKER.checkOutdate();
+        Launcher.UPDATE_CHECKER.checkOutdate();
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionItem.java
index f18996d27..7843d3d7e 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionItem.java
@@ -32,7 +32,7 @@ import javafx.scene.layout.Pane;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
 import javafx.scene.paint.Color;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Theme;
 
 import java.util.Optional;
@@ -73,10 +73,10 @@ public final class VersionItem extends StackPane {
         btnLaunch.setGraphic(SVG.launch(Theme.blackFillBinding(), 15, 15));
         btnScript.setGraphic(SVG.script(Theme.blackFillBinding(), 15, 15));
 
-        FXUtils.installTooltip(btnSettings, Main.i18n("version.settings"));
-        FXUtils.installTooltip(btnUpdate, Main.i18n("version.update"));
-        FXUtils.installTooltip(btnLaunch, Main.i18n("version.launch"));
-        FXUtils.installTooltip(btnScript, Main.i18n("version.launch_script"));
+        FXUtils.installTooltip(btnSettings, Launcher.i18n("version.settings"));
+        FXUtils.installTooltip(btnUpdate, Launcher.i18n("version.update"));
+        FXUtils.installTooltip(btnLaunch, Launcher.i18n("version.launch"));
+        FXUtils.installTooltip(btnScript, Launcher.i18n("version.launch_script"));
 
         icon.translateYProperty().bind(Bindings.createDoubleBinding(() -> header.getBoundsInParent().getHeight() - icon.getHeight() / 2 - 16, header.boundsInParentProperty(), icon.heightProperty()));
         FXUtils.limitSize(iconView, 32, 32);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionListItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionListItem.java
index 7078d9dd9..140c64fd2 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionListItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionListItem.java
@@ -17,11 +17,14 @@
  */
 package org.jackhuang.hmcl.ui;
 
+import com.jfoenix.controls.JFXButton;
+import javafx.event.EventHandler;
 import javafx.fxml.FXML;
 import javafx.geometry.Rectangle2D;
 import javafx.scene.control.Label;
 import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
+import javafx.scene.input.MouseEvent;
 import javafx.scene.layout.StackPane;
 
 public final class VersionListItem extends StackPane {
@@ -33,7 +36,7 @@ public final class VersionListItem extends StackPane {
     private Label lblGameVersion;
     @FXML
     private ImageView imageView;
-    private Runnable handler;
+    @FXML private JFXButton btnSettings;
 
     public VersionListItem(String versionName) {
         this(versionName, "");
@@ -48,13 +51,8 @@ public final class VersionListItem extends StackPane {
         FXUtils.limitSize(imageView, 32, 32);
     }
 
-    @FXML
-    private void onSettings() {
-        handler.run();
-    }
-
-    public void setOnSettingsButtonClicked(Runnable handler) {
-        this.handler = handler;
+    public void setOnSettingsButtonClicked(EventHandler<? super MouseEvent> handler) {
+        btnSettings.setOnMouseClicked(handler);
     }
 
     public void setVersionName(String versionName) {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionPage.java
index a819a94a1..eb66d705f 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionPage.java
@@ -26,7 +26,7 @@ import javafx.beans.property.StringProperty;
 import javafx.fxml.FXML;
 import javafx.scene.control.Tab;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.game.GameAssetIndexDownloadTask;
 import org.jackhuang.hmcl.setting.Profile;
 import org.jackhuang.hmcl.ui.export.ExportWizardProvider;
@@ -79,17 +79,17 @@ public final class VersionPage extends StackPane implements DecoratorPage {
         browsePopup = new JFXPopup(browseList);
         managementPopup = new JFXPopup(managementList);
 
-        FXUtils.installTooltip(btnDelete, Main.i18n("version.manage.remove"));
-        FXUtils.installTooltip(btnBrowseMenu, Main.i18n("settings.game.exploration"));
-        FXUtils.installTooltip(btnManagementMenu, Main.i18n("settings.game.management"));
-        FXUtils.installTooltip(btnExport, Main.i18n("modpack.export"));
+        FXUtils.installTooltip(btnDelete, Launcher.i18n("version.manage.remove"));
+        FXUtils.installTooltip(btnBrowseMenu, Launcher.i18n("settings.game.exploration"));
+        FXUtils.installTooltip(btnManagementMenu, Launcher.i18n("settings.game.management"));
+        FXUtils.installTooltip(btnExport, Launcher.i18n("modpack.export"));
     }
 
     public void load(String id, Profile profile) {
         this.version = id;
         this.profile = profile;
 
-        title.set(Main.i18n("settings.game") + " - " + id);
+        title.set(Launcher.i18n("settings.game") + " - " + id);
 
         versionSettingsController.loadVersionSetting(profile, id);
         modController.setParentTab(tabPane);
@@ -185,7 +185,7 @@ public final class VersionPage extends StackPane implements DecoratorPage {
     }
 
     public static void deleteVersion(Profile profile, String version) {
-        Controllers.confirmDialog(Main.i18n("version.manage.remove.confirm", version), Main.i18n("message.confirm"), () -> {
+        Controllers.confirmDialog(Launcher.i18n("version.manage.remove.confirm", version), Launcher.i18n("message.confirm"), () -> {
             if (profile.getRepository().removeVersionFromDisk(version)) {
                 profile.getRepository().refreshVersionsAsync().start();
                 Controllers.navigate(null);
@@ -194,7 +194,7 @@ public final class VersionPage extends StackPane implements DecoratorPage {
     }
 
     public static void renameVersion(Profile profile, String version) {
-        Controllers.inputDialog(Main.i18n("version.manage.rename.message"), res -> {
+        Controllers.inputDialog(Launcher.i18n("version.manage.rename.message"), res -> {
             if (profile.getRepository().renameVersion(version, res)) {
                 profile.getRepository().refreshVersionsAsync().start();
                 Controllers.navigate(null);
@@ -203,6 +203,6 @@ public final class VersionPage extends StackPane implements DecoratorPage {
     }
 
     public static void exportVersion(Profile profile, String version) {
-        Controllers.getDecorator().startWizard(new ExportWizardProvider(profile, version), Main.i18n("modpack.wizard"));
+        Controllers.getDecorator().startWizard(new ExportWizardProvider(profile, version), Launcher.i18n("modpack.wizard"));
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionSettingsController.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionSettingsController.java
index 13829715c..a62277b82 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionSettingsController.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/VersionSettingsController.java
@@ -17,7 +17,10 @@
  */
 package org.jackhuang.hmcl.ui;
 
-import com.jfoenix.controls.*;
+import com.jfoenix.controls.JFXCheckBox;
+import com.jfoenix.controls.JFXComboBox;
+import com.jfoenix.controls.JFXTextField;
+import com.jfoenix.controls.JFXToggleButton;
 import javafx.application.Platform;
 import javafx.fxml.FXML;
 import javafx.scene.Node;
@@ -27,7 +30,7 @@ import javafx.scene.control.Toggle;
 import javafx.scene.image.Image;
 import javafx.scene.layout.VBox;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.EnumGameDirectory;
 import org.jackhuang.hmcl.setting.Profile;
 import org.jackhuang.hmcl.setting.VersionSetting;
@@ -77,7 +80,7 @@ public final class VersionSettingsController {
 
     @FXML
     private void initialize() {
-        lblPhysicalMemory.setText(Main.i18n("settings.physical_memory") + ": " + OperatingSystem.TOTAL_MEMORY + "MB");
+        lblPhysicalMemory.setText(Launcher.i18n("settings.physical_memory") + ": " + OperatingSystem.TOTAL_MEMORY + "MB");
 
         FXUtils.smoothScrolling(scroll);
 
@@ -91,13 +94,13 @@ public final class VersionSettingsController {
             javaItem.getExtensionFilters().add(new FileChooser.ExtensionFilter("Java", "java.exe", "javaw.exe"));
 
         gameDirItem.loadChildren(Arrays.asList(
-                gameDirItem.createChildren(Main.i18n("settings.advanced.game_dir.default"), EnumGameDirectory.ROOT_FOLDER),
-                gameDirItem.createChildren(Main.i18n("settings.advanced.game_dir.independent"), EnumGameDirectory.VERSION_FOLDER)
+                gameDirItem.createChildren(Launcher.i18n("settings.advanced.game_dir.default"), EnumGameDirectory.ROOT_FOLDER),
+                gameDirItem.createChildren(Launcher.i18n("settings.advanced.game_dir.independent"), EnumGameDirectory.VERSION_FOLDER)
         ));
 
         globalItem.loadChildren(Arrays.asList(
-                globalItem.createChildren(Main.i18n("settings.type.global"), true),
-                globalItem.createChildren(Main.i18n("settings.type.special"), false)
+                globalItem.createChildren(Launcher.i18n("settings.type.global"), true),
+                globalItem.createChildren(Launcher.i18n("settings.type.special"), false)
         ));
     }
 
@@ -189,7 +192,7 @@ public final class VersionSettingsController {
         });
 
         versionSetting.usesGlobalProperty().setChangedListenerAndOperate(it ->
-                globalItem.setSubtitle(Main.i18n(versionSetting.isUsesGlobal() ? "settings.type.global" : "settings.type.special")));
+                globalItem.setSubtitle(Launcher.i18n(versionSetting.isUsesGlobal() ? "settings.type.global" : "settings.type.special")));
 
         gameDirItem.getGroup().getToggles().stream()
                 .filter(it -> it.getUserData() == versionSetting.getGameDirType())
@@ -229,7 +232,7 @@ public final class VersionSettingsController {
     @FXML
     private void onExploreIcon() {
         FileChooser chooser = new FileChooser();
-        chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Main.i18n("extension.png"), "*.png"));
+        chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Launcher.i18n("extension.png"), "*.png"));
         File selectedFile = chooser.showOpenDialog(Controllers.getStage());
         if (selectedFile != null) {
             File iconFile = profile.getRepository().getVersionIcon(versionId);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ClassTitle.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ClassTitle.java
index 90abf3c26..88c168d43 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ClassTitle.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ClassTitle.java
@@ -18,11 +18,13 @@
 package org.jackhuang.hmcl.ui.construct;
 
 import javafx.scene.Node;
+import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
 import javafx.scene.paint.Color;
 import javafx.scene.shape.Rectangle;
 import javafx.scene.text.Text;
+import org.jackhuang.hmcl.util.Lang;
 
 /**
  * @author huangyuhui
@@ -48,6 +50,13 @@ public class ClassTitle extends StackPane {
         getStyleClass().add("class-title");
     }
 
+    public ClassTitle(String text, Node rightNode) {
+        this(Lang.apply(new BorderPane(), borderPane -> {
+            borderPane.setLeft(Lang.apply(new VBox(), vBox -> vBox.getChildren().setAll(new Text(text))));
+            borderPane.setRight(rightNode);
+        }));
+    }
+
     public Node getContent() {
         return content;
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ComponentList.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ComponentList.java
index b79bfb431..6a3439202 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ComponentList.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ComponentList.java
@@ -60,9 +60,14 @@ public class ComponentList extends StackPane {
             child.getStyleClass().add("options-list-item-ahead");
         else
             child.getStyleClass().add("options-list-item");
+        child.getProperties().put("node", node);
         vbox.getChildren().add(child);
     }
 
+    public void removeChildren(Node node) {
+        vbox.getChildren().removeIf(node1 -> node1.getProperties().get("node") == node);
+    }
+
     public String getTitle() {
         return title.get();
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/FileItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/FileItem.java
index 0bbfa6bb9..b80c23113 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/FileItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/FileItem.java
@@ -26,7 +26,7 @@ import javafx.scene.control.Tooltip;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.VBox;
 import javafx.stage.DirectoryChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Theme;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.ui.FXUtils;
@@ -54,7 +54,7 @@ public class FileItem extends BorderPane {
         right.setGraphic(SVG.pencil(Theme.blackFillBinding(), 15, 15));
         right.getStyleClass().add("toggle-icon4");
         right.setOnMouseClicked(e -> onExplore());
-        FXUtils.installTooltip(right, Main.i18n("button.edit"));
+        FXUtils.installTooltip(right, Launcher.i18n("button.edit"));
         setRight(right);
 
         Tooltip tip = new Tooltip();
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/IconedItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/IconedItem.java
index 46c4aab27..38ecd9933 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/IconedItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/IconedItem.java
@@ -21,21 +21,19 @@ import javafx.geometry.Pos;
 import javafx.scene.Node;
 import javafx.scene.control.Label;
 import javafx.scene.layout.HBox;
+import javafx.scene.paint.Paint;
 
 public class IconedItem extends RipplerContainer {
-    private final Node icon;
-    private final String text;
 
     public IconedItem(Node icon, String text) {
         super(createHBox(icon, text));
-        this.icon = icon;
-        this.text = text;
     }
 
     private static HBox createHBox(Node icon, String text) {
         HBox hBox = new HBox();
         icon.setMouseTransparent(true);
         Label textLabel = new Label(text);
+        textLabel.setId("label");
         textLabel.setAlignment(Pos.CENTER);
         textLabel.setMouseTransparent(true);
         hBox.getChildren().addAll(icon, textLabel);
@@ -43,4 +41,12 @@ public class IconedItem extends RipplerContainer {
         hBox.setAlignment(Pos.CENTER_LEFT);
         return hBox;
     }
+
+    public void setText(String text) {
+        ((Label) lookup("#label")).setText(text);
+    }
+
+    public void setTextFill(Paint paint) {
+        ((Label) lookup("#label")).setTextFill(paint);
+    }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ImagePickerItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ImagePickerItem.java
index ee6932e65..178d6b10a 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ImagePickerItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/ImagePickerItem.java
@@ -15,7 +15,7 @@ import javafx.scene.input.MouseEvent;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Theme;
 import org.jackhuang.hmcl.ui.FXUtils;
 import org.jackhuang.hmcl.ui.SVG;
@@ -41,7 +41,7 @@ public final class ImagePickerItem extends BorderPane {
         selectButton.onMouseClickedProperty().bind(onSelectButtonClicked);
         selectButton.getStyleClass().add("toggle-icon4");
 
-        FXUtils.installTooltip(selectButton, Main.i18n("button.edit"));
+        FXUtils.installTooltip(selectButton, Launcher.i18n("button.edit"));
 
         HBox hBox = new HBox();
         hBox.getChildren().setAll(imageView, selectButton);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageBox.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageBox.java
index 71402e1ad..528e0b55a 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageBox.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageBox.java
@@ -17,10 +17,12 @@
  */
 package org.jackhuang.hmcl.ui.construct;
 
+import com.jfoenix.concurrency.JFXUtilities;
 import javafx.scene.control.Alert;
 import javafx.scene.control.ButtonType;
 import javafx.scene.control.TextInputDialog;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
+import org.jackhuang.hmcl.ui.FXUtils;
 
 import javax.swing.*;
 import java.util.Optional;
@@ -29,7 +31,7 @@ public final class MessageBox {
     private MessageBox() {
     }
 
-    private static final String TITLE = Main.i18n("message.info");
+    private static final String TITLE = Launcher.i18n("message.info");
 
     /**
      * User Operation: Yes
@@ -123,30 +125,32 @@ public final class MessageBox {
     }
 
     public static int confirm(String message, String title, int option) {
-        Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
-        alert.setTitle(title);
-        alert.setHeaderText(title);
-        alert.setContentText(message);
-        switch (option) {
-            case YES_NO_OPTION:
-                alert.getButtonTypes().setAll(ButtonType.YES, ButtonType.NO);
-                break;
-            case YES_NO_CANCEL_OPTION:
-                alert.getButtonTypes().setAll(ButtonType.YES, ButtonType.NO, ButtonType.CANCEL);
-                break;
-            case OK_CANCEL_OPTION:
-                alert.getButtonTypes().setAll(ButtonType.OK, ButtonType.CANCEL);
-                break;
-            default:
-                throw new IllegalArgumentException("Unrecognized message box option " + option);
-        }
-        Optional<ButtonType> buttonType = alert.showAndWait();
-        if (!buttonType.isPresent()) return CLOSED_OPTION;
-        else if (buttonType.get() == ButtonType.OK) return OK_OPTION;
-        else if (buttonType.get() == ButtonType.YES) return YES_OPTION;
-        else if (buttonType.get() == ButtonType.NO) return NO_OPTION;
-        else if (buttonType.get() == ButtonType.CANCEL) return CANCEL_OPTION;
-        else throw new IllegalStateException("Unrecognized button type:" + buttonType.get());
+        return FXUtils.runInUIThread(() -> {
+            Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
+            alert.setTitle(title);
+            alert.setHeaderText(title);
+            alert.setContentText(message);
+            switch (option) {
+                case YES_NO_OPTION:
+                    alert.getButtonTypes().setAll(ButtonType.YES, ButtonType.NO);
+                    break;
+                case YES_NO_CANCEL_OPTION:
+                    alert.getButtonTypes().setAll(ButtonType.YES, ButtonType.NO, ButtonType.CANCEL);
+                    break;
+                case OK_CANCEL_OPTION:
+                    alert.getButtonTypes().setAll(ButtonType.OK, ButtonType.CANCEL);
+                    break;
+                default:
+                    throw new IllegalArgumentException("Unrecognized message box option " + option);
+            }
+            Optional<ButtonType> buttonType = alert.showAndWait();
+            if (!buttonType.isPresent()) return CLOSED_OPTION;
+            else if (buttonType.get() == ButtonType.OK) return OK_OPTION;
+            else if (buttonType.get() == ButtonType.YES) return YES_OPTION;
+            else if (buttonType.get() == ButtonType.NO) return NO_OPTION;
+            else if (buttonType.get() == ButtonType.CANCEL) return CANCEL_OPTION;
+            else throw new IllegalStateException("Unexpected button type:" + buttonType.get());
+        });
     }
 
     public static Optional<String> input(String message) {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
index 340b4e6ea..ca9d30dec 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MessageDialogPane.java
@@ -23,7 +23,7 @@ import javafx.fxml.FXML;
 import javafx.scene.control.Label;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Theme;
 import org.jackhuang.hmcl.ui.FXUtils;
 import org.jackhuang.hmcl.ui.SVG;
@@ -92,8 +92,8 @@ public final class MessageDialogPane extends StackPane {
             Optional.ofNullable(onCancel).ifPresent(Runnable::run);
         });
 
-        acceptButton.setText(Main.i18n("button.yes"));
-        cancelButton.setText(Main.i18n("button.no"));
+        acceptButton.setText(Launcher.i18n("button.yes"));
+        cancelButton.setText(Launcher.i18n("button.no"));
 
         actions.getChildren().add(cancelButton);
     }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiColorItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiColorItem.java
index 42285ea61..8e7ec20e3 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiColorItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiColorItem.java
@@ -5,17 +5,15 @@ import com.jfoenix.controls.JFXRadioButton;
 import javafx.beans.NamedArg;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
-import javafx.geometry.Pos;
 import javafx.scene.Node;
 import javafx.scene.control.Label;
 import javafx.scene.control.Toggle;
 import javafx.scene.control.ToggleGroup;
-import javafx.scene.control.Tooltip;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
 import javafx.scene.paint.Color;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.ui.FXUtils;
 
 import java.util.Collection;
@@ -23,8 +21,8 @@ import java.util.Optional;
 import java.util.function.Consumer;
 
 public class MultiColorItem extends ComponentList {
-    private final StringProperty customTitle = new SimpleStringProperty(this, "customTitle", Main.i18n("selector.custom"));
-    private final StringProperty chooserTitle = new SimpleStringProperty(this, "chooserTitle", Main.i18n("selector.choose_file"));
+    private final StringProperty customTitle = new SimpleStringProperty(this, "customTitle", Launcher.i18n("selector.custom"));
+    private final StringProperty chooserTitle = new SimpleStringProperty(this, "chooserTitle", Launcher.i18n("selector.choose_file"));
 
     private final ToggleGroup group = new ToggleGroup();
     private final JFXColorPicker colorPicker = new JFXColorPicker();
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiFileItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiFileItem.java
index c37fdc6ac..b0d1aa76e 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiFileItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/MultiFileItem.java
@@ -38,7 +38,7 @@ import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
 import javafx.stage.DirectoryChooser;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.setting.Theme;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.ui.FXUtils;
@@ -49,8 +49,8 @@ import java.util.Collection;
 import java.util.function.Consumer;
 
 public class MultiFileItem extends ComponentList {
-    private final StringProperty customTitle = new SimpleStringProperty(this, "customTitle", Main.i18n("selector.custom"));
-    private final StringProperty chooserTitle = new SimpleStringProperty(this, "chooserTitle", Main.i18n("selector.choose_file"));
+    private final StringProperty customTitle = new SimpleStringProperty(this, "customTitle", Launcher.i18n("selector.custom"));
+    private final StringProperty chooserTitle = new SimpleStringProperty(this, "chooserTitle", Launcher.i18n("selector.choose_file"));
     private final BooleanProperty directory = new SimpleBooleanProperty(this, "directory", false);
     private final SimpleStringProperty tooltip = new SimpleStringProperty(this, "tooltip");
     private final ObservableList<FileChooser.ExtensionFilter> extensionFilters = FXCollections.observableArrayList();
@@ -153,7 +153,7 @@ public class MultiFileItem extends ComponentList {
 
     public void onExploreJavaDir() {
         DirectoryChooser chooser = new DirectoryChooser();
-        chooser.setTitle(Main.i18n(getChooserTitle()));
+        chooser.setTitle(Launcher.i18n(getChooserTitle()));
         File selectedDir = chooser.showDialog(Controllers.getStage());
         if (selectedDir != null)
             txtCustom.setText(selectedDir.getAbsolutePath());
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/StackContainerPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/StackContainerPane.java
new file mode 100644
index 000000000..78f2a75d0
--- /dev/null
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/StackContainerPane.java
@@ -0,0 +1,45 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2017  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.ui.construct;
+
+import javafx.scene.Node;
+import javafx.scene.layout.StackPane;
+
+import java.util.Stack;
+
+public class StackContainerPane extends StackPane {
+    private final Stack<Node> stack = new Stack<>();
+
+    public void push(Node node) {
+        if (node.getProperties().containsKey("controllers"))
+            stack.push(node);
+        getChildren().setAll(node);
+    }
+
+    public void pop() {
+        stack.pop();
+        if (stack.isEmpty())
+            getChildren().setAll();
+        else
+            getChildren().setAll(stack.peek());
+    }
+
+    public boolean isEmpty() {
+        return stack.isEmpty();
+    }
+}
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogPane.java
index 249b4dd57..0038117a9 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogPane.java
@@ -57,7 +57,9 @@ public class TaskExecutorDialogPane extends StackPane {
 
     public void setExecutor(TaskExecutor executor) {
         this.executor = executor;
-        taskListPane.setExecutor(executor);
+
+        if (executor != null)
+            taskListPane.setExecutor(executor);
     }
 
     public StringProperty titleProperty() {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogWizardDisplayer.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogWizardDisplayer.java
index f79b14805..6394fb4a9 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogWizardDisplayer.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskExecutorDialogWizardDisplayer.java
@@ -19,7 +19,7 @@ package org.jackhuang.hmcl.ui.construct;
 
 import com.jfoenix.concurrency.JFXUtilities;
 import javafx.beans.property.StringProperty;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.task.TaskExecutor;
 import org.jackhuang.hmcl.task.TaskListener;
@@ -38,7 +38,7 @@ public interface TaskExecutorDialogWizardDisplayer extends AbstractWizardDisplay
             Controllers.navigate(null);
         });
 
-        pane.setTitle(Main.i18n("message.doing"));
+        pane.setTitle(Launcher.i18n("message.doing"));
         pane.setProgress(Double.MAX_VALUE);
         if (settings.containsKey("title")) {
             Object title = settings.get("title");
@@ -64,7 +64,7 @@ public interface TaskExecutorDialogWizardDisplayer extends AbstractWizardDisplay
                         if (settings.containsKey("success_message") && settings.get("success_message") instanceof String)
                             JFXUtilities.runInFX(() -> Controllers.dialog((String) settings.get("success_message"), null, MessageBox.FINE_MESSAGE, () -> Controllers.navigate(null)));
                         else if (!settings.containsKey("forbid_success_message"))
-                            JFXUtilities.runInFX(() -> Controllers.dialog(Main.i18n("message.success"), null, MessageBox.FINE_MESSAGE, () -> Controllers.navigate(null)));
+                            JFXUtilities.runInFX(() -> Controllers.dialog(Launcher.i18n("message.success"), null, MessageBox.FINE_MESSAGE, () -> Controllers.navigate(null)));
                     } else {
                         if (executor.getLastException() == null)
                             return;
@@ -72,7 +72,7 @@ public interface TaskExecutorDialogWizardDisplayer extends AbstractWizardDisplay
                         if (settings.containsKey("failure_message") && settings.get("failure_message") instanceof String)
                             JFXUtilities.runInFX(() -> Controllers.dialog(appendix, (String) settings.get("failure_message"), MessageBox.ERROR_MESSAGE, () -> Controllers.navigate(null)));
                         else if (!settings.containsKey("forbid_failure_message"))
-                            JFXUtilities.runInFX(() -> Controllers.dialog(appendix, Main.i18n("wizard.failed"), MessageBox.ERROR_MESSAGE, () -> Controllers.navigate(null)));
+                            JFXUtilities.runInFX(() -> Controllers.dialog(appendix, Launcher.i18n("wizard.failed"), MessageBox.ERROR_MESSAGE, () -> Controllers.navigate(null)));
                     }
                 }
             });
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskListPane.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskListPane.java
index 9d5c7c2a6..40bdbb3bd 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskListPane.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/construct/TaskListPane.java
@@ -23,7 +23,7 @@ import javafx.scene.control.Label;
 import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.forge.ForgeInstallTask;
 import org.jackhuang.hmcl.download.game.GameAssetDownloadTask;
 import org.jackhuang.hmcl.download.game.GameAssetRefreshTask;
@@ -62,29 +62,29 @@ public final class TaskListPane extends StackPane {
                     return;
 
                 if (task instanceof GameAssetRefreshTask) {
-                    task.setName(Main.i18n("assets.download"));
+                    task.setName(Launcher.i18n("assets.download"));
                 } else if (task instanceof GameAssetDownloadTask) {
-                    task.setName(Main.i18n("assets.download_all"));
+                    task.setName(Launcher.i18n("assets.download_all"));
                 } else if (task instanceof ForgeInstallTask) {
-                    task.setName(Main.i18n("install.installer.install", Main.i18n("install.installer.forge")));
+                    task.setName(Launcher.i18n("install.installer.install", Launcher.i18n("install.installer.forge")));
                 } else if (task instanceof LiteLoaderInstallTask) {
-                    task.setName(Main.i18n("install.installer.install", Main.i18n("install.installer.liteloader")));
+                    task.setName(Launcher.i18n("install.installer.install", Launcher.i18n("install.installer.liteloader")));
                 } else if (task instanceof OptiFineInstallTask) {
-                    task.setName(Main.i18n("install.installer.install", Main.i18n("install.installer.optifine")));
+                    task.setName(Launcher.i18n("install.installer.install", Launcher.i18n("install.installer.optifine")));
                 } else if (task instanceof CurseCompletionTask) {
-                    task.setName(Main.i18n("modpack.type.curse.completion"));
+                    task.setName(Launcher.i18n("modpack.type.curse.completion"));
                 } else if (task instanceof ModpackInstallTask) {
-                    task.setName(Main.i18n("modpack.installing"));
+                    task.setName(Launcher.i18n("modpack.installing"));
                 } else if (task instanceof CurseInstallTask) {
-                    task.setName(Main.i18n("modpack.install", Main.i18n("modpack.type.curse")));
+                    task.setName(Launcher.i18n("modpack.install", Launcher.i18n("modpack.type.curse")));
                 } else if (task instanceof MultiMCModpackInstallTask) {
-                    task.setName(Main.i18n("modpack.install", Main.i18n("modpack.type.multimc")));
+                    task.setName(Launcher.i18n("modpack.install", Launcher.i18n("modpack.type.multimc")));
                 } else if (task instanceof HMCLModpackInstallTask) {
-                    task.setName(Main.i18n("modpack.install", Main.i18n("modpack.type.hmcl")));
+                    task.setName(Launcher.i18n("modpack.install", Launcher.i18n("modpack.type.hmcl")));
                 } else if (task instanceof HMCLModpackExportTask) {
-                    task.setName(Main.i18n("modpack.export"));
+                    task.setName(Launcher.i18n("modpack.export"));
                 } else if (task instanceof MinecraftInstanceTask) {
-                    task.setName(Main.i18n("modpack.scan"));
+                    task.setName(Launcher.i18n("modpack.scan"));
                 }
 
                 ProgressListNode node = new ProgressListNode(task);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/AdditionalInstallersPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/AdditionalInstallersPage.java
index 597a9f2a9..71d2c9f28 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/AdditionalInstallersPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/AdditionalInstallersPage.java
@@ -22,7 +22,7 @@ import javafx.fxml.FXML;
 import javafx.scene.control.Label;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.DownloadProvider;
 import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.game.GameRepository;
@@ -34,7 +34,7 @@ import org.jackhuang.hmcl.util.Lang;
 import java.util.Map;
 import java.util.Optional;
 
-import static org.jackhuang.hmcl.Main.i18n;
+import static org.jackhuang.hmcl.Launcher.i18n;
 
 class AdditionalInstallersPage extends StackPane implements WizardPage {
     private final InstallerWizardProvider provider;
@@ -100,7 +100,7 @@ class AdditionalInstallersPage extends StackPane implements WizardPage {
 
     @Override
     public String getTitle() {
-        return Main.i18n("settings.tabs.installers");
+        return Launcher.i18n("settings.tabs.installers");
     }
 
     private String getVersion(String id) {
@@ -109,24 +109,24 @@ class AdditionalInstallersPage extends StackPane implements WizardPage {
 
     @Override
     public void onNavigate(Map<String, Object> settings) {
-        lblGameVersion.setText(Main.i18n("install.new_game.current_game_version") + ": " + provider.getGameVersion());
+        lblGameVersion.setText(Launcher.i18n("install.new_game.current_game_version") + ": " + provider.getGameVersion());
         btnForge.setDisable(provider.getForge() != null);
         if (provider.getForge() != null || controller.getSettings().containsKey("forge"))
-            lblForge.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.forge")) + ": " + Lang.nonNull(provider.getForge(), getVersion("forge")));
+            lblForge.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.forge")) + ": " + Lang.nonNull(provider.getForge(), getVersion("forge")));
         else
-            lblForge.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.forge")));
+            lblForge.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.forge")));
 
         btnLiteLoader.setDisable(provider.getLiteLoader() != null);
         if (provider.getLiteLoader() != null || controller.getSettings().containsKey("liteloader"))
-            lblLiteLoader.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.liteloader")) + ": " + Lang.nonNull(provider.getLiteLoader(), getVersion("liteloader")));
+            lblLiteLoader.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.liteloader")) + ": " + Lang.nonNull(provider.getLiteLoader(), getVersion("liteloader")));
         else
-            lblLiteLoader.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.liteloader")));
+            lblLiteLoader.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.liteloader")));
 
         btnOptiFine.setDisable(provider.getOptiFine() != null);
         if (provider.getOptiFine() != null || controller.getSettings().containsKey("optifine"))
-            lblOptiFine.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.optifine")) + ": " + Lang.nonNull(provider.getOptiFine(), getVersion("optifine")));
+            lblOptiFine.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.optifine")) + ": " + Lang.nonNull(provider.getOptiFine(), getVersion("optifine")));
         else
-            lblOptiFine.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.optifine")));
+            lblOptiFine.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.optifine")));
 
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/DownloadWizardProvider.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/DownloadWizardProvider.java
index 2c3787c8d..b4f0ea869 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/DownloadWizardProvider.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/DownloadWizardProvider.java
@@ -18,7 +18,7 @@
 package org.jackhuang.hmcl.ui.download;
 
 import javafx.scene.Node;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.DownloadProvider;
 import org.jackhuang.hmcl.download.GameBuilder;
 import org.jackhuang.hmcl.download.RemoteVersion;
@@ -34,7 +34,7 @@ import org.jackhuang.hmcl.util.Lang;
 import java.io.File;
 import java.util.Map;
 
-import static org.jackhuang.hmcl.Main.i18n;
+import static org.jackhuang.hmcl.Launcher.i18n;
 
 public final class DownloadWizardProvider implements WizardProvider {
     private Profile profile;
@@ -77,8 +77,8 @@ public final class DownloadWizardProvider implements WizardProvider {
 
     @Override
     public Object finish(Map<String, Object> settings) {
-        settings.put("success_message", Main.i18n("install.success"));
-        settings.put("failure_message", Main.i18n("install.failed"));
+        settings.put("success_message", Launcher.i18n("install.success"));
+        settings.put("failure_message", Launcher.i18n("install.failed"));
 
         switch (Lang.parseInt(settings.get(InstallTypePage.INSTALL_TYPE), -1)) {
             case 0: return finishVersionDownloadingAsync(settings);
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallTypePage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallTypePage.java
index 2445e59a2..5c8212ee3 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallTypePage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallTypePage.java
@@ -20,7 +20,7 @@ package org.jackhuang.hmcl.ui.download;
 import com.jfoenix.controls.JFXListView;
 import javafx.fxml.FXML;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.ui.FXUtils;
 import org.jackhuang.hmcl.ui.wizard.WizardController;
 import org.jackhuang.hmcl.ui.wizard.WizardPage;
@@ -28,12 +28,10 @@ import org.jackhuang.hmcl.ui.wizard.WizardPage;
 import java.util.Map;
 
 public final class InstallTypePage extends StackPane implements WizardPage {
-    private final WizardController controller;
 
     @FXML private JFXListView<Object> list;
 
     public InstallTypePage(WizardController controller) {
-        this.controller = controller;
 
         FXUtils.loadFXML(this, "/assets/fxml/download/dltype.fxml");
         list.setOnMouseClicked(e -> {
@@ -51,7 +49,7 @@ public final class InstallTypePage extends StackPane implements WizardPage {
 
     @Override
     public String getTitle() {
-        return Main.i18n("install.select");
+        return Launcher.i18n("install.select");
     }
 
     public static final String INSTALL_TYPE = "INSTALL_TYPE";
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallerWizardProvider.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallerWizardProvider.java
index 9272dc7e3..d8e77a3b7 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallerWizardProvider.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallerWizardProvider.java
@@ -18,7 +18,7 @@
 package org.jackhuang.hmcl.ui.download;
 
 import javafx.scene.Node;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.BMCLAPIDownloadProvider;
 import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.game.Version;
@@ -80,8 +80,8 @@ public final class InstallerWizardProvider implements WizardProvider {
 
     @Override
     public Object finish(Map<String, Object> settings) {
-        settings.put("success_message", Main.i18n("install.success"));
-        settings.put("failure_message", Main.i18n("install.failed"));
+        settings.put("success_message", Launcher.i18n("install.success"));
+        settings.put("failure_message", Launcher.i18n("install.failed"));
 
         Task ret = Task.empty();
 
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallersPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallersPage.java
index 6f81fc2bb..df52ef8c7 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallersPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/InstallersPage.java
@@ -23,7 +23,7 @@ import javafx.fxml.FXML;
 import javafx.scene.control.Label;
 import javafx.scene.layout.StackPane;
 import javafx.scene.layout.VBox;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.DownloadProvider;
 import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.game.GameRepository;
@@ -34,12 +34,9 @@ import org.jackhuang.hmcl.ui.wizard.WizardPage;
 import org.jackhuang.hmcl.util.StringUtils;
 
 import java.util.Map;
-import java.util.Optional;
 
 public class InstallersPage extends StackPane implements WizardPage {
     private final WizardController controller;
-    private final GameRepository repository;
-    private final DownloadProvider downloadProvider;
 
     @FXML
     private VBox list;
@@ -73,37 +70,35 @@ public class InstallersPage extends StackPane implements WizardPage {
 
     public InstallersPage(WizardController controller, GameRepository repository, DownloadProvider downloadProvider) {
         this.controller = controller;
-        this.repository = repository;
-        this.downloadProvider = downloadProvider;
 
         FXUtils.loadFXML(this, "/assets/fxml/download/installers.fxml");
 
         String gameVersion = ((RemoteVersion<?>) controller.getSettings().get("game")).getGameVersion();
         Validator hasVersion = new Validator(s -> !repository.hasVersion(s) && StringUtils.isNotBlank(s));
-        hasVersion.setMessage(Main.i18n("install.new_game.already_exists"));
+        hasVersion.setMessage(Launcher.i18n("install.new_game.already_exists"));
         txtName.getValidators().add(hasVersion);
         txtName.textProperty().addListener(e -> btnInstall.setDisable(!txtName.validate()));
         txtName.setText(gameVersion);
 
         btnForge.setOnMouseClicked(e -> {
             controller.getSettings().put(INSTALLER_TYPE, 0);
-            controller.onNext(new VersionsPage(controller, Main.i18n("install.installer.choose", Main.i18n("install.installer.forge")), gameVersion, downloadProvider, "forge", () -> controller.onPrev(false)));
+            controller.onNext(new VersionsPage(controller, Launcher.i18n("install.installer.choose", Launcher.i18n("install.installer.forge")), gameVersion, downloadProvider, "forge", () -> controller.onPrev(false)));
         });
 
         btnLiteLoader.setOnMouseClicked(e -> {
             controller.getSettings().put(INSTALLER_TYPE, 1);
-            controller.onNext(new VersionsPage(controller, Main.i18n("install.installer.choose", Main.i18n("install.installer.liteloader")), gameVersion, downloadProvider, "liteloader", () -> controller.onPrev(false)));
+            controller.onNext(new VersionsPage(controller, Launcher.i18n("install.installer.choose", Launcher.i18n("install.installer.liteloader")), gameVersion, downloadProvider, "liteloader", () -> controller.onPrev(false)));
         });
 
         btnOptiFine.setOnMouseClicked(e -> {
             controller.getSettings().put(INSTALLER_TYPE, 2);
-            controller.onNext(new VersionsPage(controller, Main.i18n("install.installer.choose", Main.i18n("install.installer.optifine")), gameVersion, downloadProvider, "optifine", () -> controller.onPrev(false)));
+            controller.onNext(new VersionsPage(controller, Launcher.i18n("install.installer.choose", Launcher.i18n("install.installer.optifine")), gameVersion, downloadProvider, "optifine", () -> controller.onPrev(false)));
         });
     }
 
     @Override
     public String getTitle() {
-        return Main.i18n("install.new_game");
+        return Launcher.i18n("install.new_game");
     }
 
     private String getVersion(String id) {
@@ -112,21 +107,21 @@ public class InstallersPage extends StackPane implements WizardPage {
 
     @Override
     public void onNavigate(Map<String, Object> settings) {
-        lblGameVersion.setText(Main.i18n("install.new_game.current_game_version") + ": " + getVersion("game"));
+        lblGameVersion.setText(Launcher.i18n("install.new_game.current_game_version") + ": " + getVersion("game"));
         if (controller.getSettings().containsKey("forge"))
-            lblForge.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.forge")) + ": " + getVersion("forge"));
+            lblForge.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.forge")) + ": " + getVersion("forge"));
         else
-            lblForge.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.forge")));
+            lblForge.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.forge")));
 
         if (controller.getSettings().containsKey("liteloader"))
-            lblLiteLoader.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.liteloader")) + ": " + getVersion("liteloader"));
+            lblLiteLoader.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.liteloader")) + ": " + getVersion("liteloader"));
         else
-            lblLiteLoader.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.liteloader")));
+            lblLiteLoader.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.liteloader")));
 
         if (controller.getSettings().containsKey("optifine"))
-            lblOptiFine.setText(Main.i18n("install.installer.version", Main.i18n("install.installer.optifine")) + ": " + getVersion("optifine"));
+            lblOptiFine.setText(Launcher.i18n("install.installer.version", Launcher.i18n("install.installer.optifine")) + ": " + getVersion("optifine"));
         else
-            lblOptiFine.setText(Main.i18n("install.installer.not_installed", Main.i18n("install.installer.optifine")));
+            lblOptiFine.setText(Launcher.i18n("install.installer.not_installed", Launcher.i18n("install.installer.optifine")));
     }
 
     @Override
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/ModpackPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/ModpackPage.java
index 072f55ff5..28853e893 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/ModpackPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/ModpackPage.java
@@ -25,7 +25,7 @@ import javafx.scene.control.Label;
 import javafx.scene.layout.Region;
 import javafx.scene.layout.StackPane;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.game.ModpackHelper;
 import org.jackhuang.hmcl.mod.Modpack;
 import org.jackhuang.hmcl.mod.UnsupportedModpackException;
@@ -75,16 +75,16 @@ public final class ModpackPage extends StackPane implements WizardPage {
         Profile profile = (Profile) controller.getSettings().get("PROFILE");
 
         FileChooser chooser = new FileChooser();
-        chooser.setTitle(Main.i18n("modpack.choose"));
-        chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Main.i18n("modpack"), "*.zip"));
+        chooser.setTitle(Launcher.i18n("modpack.choose"));
+        chooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Launcher.i18n("modpack"), "*.zip"));
         File selectedFile = chooser.showOpenDialog(Controllers.getStage());
         if (selectedFile == null) Platform.runLater(() -> Controllers.navigate(null));
         else {
             controller.getSettings().put(MODPACK_FILE, selectedFile);
             lblModpackLocation.setText(selectedFile.getAbsolutePath());
             txtModpackName.getValidators().addAll(
-                    new Validator(Main.i18n("install.new_game.already_exists"), str -> !profile.getRepository().hasVersion(str) && StringUtils.isNotBlank(str)),
-                    new Validator(Main.i18n("version.forbidden_name"), str -> !profile.getRepository().forbidsVersion(str))
+                    new Validator(Launcher.i18n("install.new_game.already_exists"), str -> !profile.getRepository().hasVersion(str) && StringUtils.isNotBlank(str)),
+                    new Validator(Launcher.i18n("version.forbidden_name"), str -> !profile.getRepository().forbidsVersion(str))
             );
             txtModpackName.textProperty().addListener(e -> btnInstall.setDisable(!txtModpackName.validate()));
 
@@ -96,7 +96,7 @@ public final class ModpackPage extends StackPane implements WizardPage {
                 lblAuthor.setText(manifest.getAuthor());
                 txtModpackName.setText(manifest.getName() + (StringUtils.isBlank(manifest.getVersion()) ? "" : "-" + manifest.getVersion()));
             } catch (UnsupportedModpackException e) {
-                txtModpackName.setText(Main.i18n("modpack.task.install.error"));
+                txtModpackName.setText(Launcher.i18n("modpack.task.install.error"));
             }
         }
     }
@@ -118,14 +118,14 @@ public final class ModpackPage extends StackPane implements WizardPage {
         if (manifest != null) {
             WebStage stage = new WebStage();
             stage.getWebView().getEngine().loadContent(manifest.getDescription());
-            stage.setTitle(Main.i18n("modpack.wizard.step.3"));
+            stage.setTitle(Launcher.i18n("modpack.wizard.step.3"));
             stage.showAndWait();
         }
     }
 
     @Override
     public String getTitle() {
-        return Main.i18n("modpack.task.install");
+        return Launcher.i18n("modpack.task.install");
     }
 
     public static final String MODPACK_FILE = "MODPACK_FILE";
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPage.java
index bf02c6990..c8611384a 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPage.java
@@ -44,11 +44,9 @@ import java.util.Objects;
 import java.util.stream.Collectors;
 
 public final class VersionsPage extends StackPane implements WizardPage, Refreshable {
-    private final WizardController controller;
     private final String gameVersion;
     private final DownloadProvider downloadProvider;
     private final String libraryId;
-    private final Runnable callback;
     private final String title;
 
     @FXML
@@ -73,12 +71,10 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
     private TaskExecutor executor;
 
     public VersionsPage(WizardController controller, String title, String gameVersion, DownloadProvider downloadProvider, String libraryId, Runnable callback) {
-        this.controller = controller;
         this.title = title;
         this.gameVersion = gameVersion;
         this.downloadProvider = downloadProvider;
         this.libraryId = libraryId;
-        this.callback = callback;
         this.versionList = downloadProvider.getVersionListById(libraryId);
 
         FXUtils.loadFXML(this, "/assets/fxml/download/versions.fxml");
@@ -93,10 +89,10 @@ public final class VersionsPage extends StackPane implements WizardPage, Refresh
         chkSnapshot.selectedProperty().addListener(listener);
         chkOld.selectedProperty().addListener(listener);
 
-        list.getSelectionModel().selectedItemProperty().addListener((a, b, newValue) -> {
-            if (newValue == null)
+        list.setOnMouseClicked(e -> {
+            if (list.getSelectionModel().getSelectedIndex() < 0)
                 return;
-            controller.getSettings().put(libraryId, newValue.getRemoteVersion());
+            controller.getSettings().put(libraryId, list.getSelectionModel().getSelectedItem().getRemoteVersion());
             callback.run();
         });
         refresh();
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPageItem.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPageItem.java
index 99ecf5571..79f2633fc 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPageItem.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/download/VersionsPageItem.java
@@ -23,7 +23,7 @@ import javafx.scene.image.Image;
 import javafx.scene.image.ImageView;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.download.game.GameRemoteVersionTag;
 import org.jackhuang.hmcl.download.liteloader.LiteLoaderRemoteVersionTag;
@@ -57,15 +57,15 @@ public final class VersionsPageItem extends StackPane {
         if (remoteVersion.getTag() instanceof GameRemoteVersionTag) {
             switch (((GameRemoteVersionTag) remoteVersion.getTag()).getType()) {
                 case RELEASE:
-                    lblGameVersion.setText(Main.i18n("version.game.release"));
+                    lblGameVersion.setText(Launcher.i18n("version.game.release"));
                     imageView.setImage(new Image("/assets/img/icon.png", 32, 32, false, true));
                     break;
                 case SNAPSHOT:
-                    lblGameVersion.setText(Main.i18n("version.game.snapshot"));
+                    lblGameVersion.setText(Launcher.i18n("version.game.snapshot"));
                     imageView.setImage(new Image("/assets/img/command.png", 32, 32, false, true));
                     break;
                 default:
-                    lblGameVersion.setText(Main.i18n("version.game.old"));
+                    lblGameVersion.setText(Launcher.i18n("version.game.old"));
                     imageView.setImage(new Image("/assets/img/grass.png", 32, 32, false, true));
                     break;
             }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackFileSelectionPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackFileSelectionPage.java
index 82cb9f1b4..16910cc5f 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackFileSelectionPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackFileSelectionPage.java
@@ -25,7 +25,7 @@ import javafx.scene.control.Label;
 import javafx.scene.control.TreeItem;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.StackPane;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.game.ModAdviser;
 import org.jackhuang.hmcl.setting.Profile;
 import org.jackhuang.hmcl.ui.FXUtils;
@@ -66,6 +66,9 @@ public final class ModpackFileSelectionPage extends StackPane implements WizardP
     }
 
     private CheckBoxTreeItem<String> getTreeItem(File file, String basePath) {
+        if (!file.exists())
+            return null;
+
         ModAdviser.ModSuggestion state = ModAdviser.ModSuggestion.SUGGESTED;
         if (basePath.length() > "minecraft/".length()) {
             state = adviser.advise(StringUtils.substringAfter(basePath, "minecraft/") + (file.isDirectory() ? "/" : ""), file.isDirectory());
@@ -147,23 +150,23 @@ public final class ModpackFileSelectionPage extends StackPane implements WizardP
 
     @Override
     public String getTitle() {
-        return Main.i18n("modpack.wizard.step.2.title");
+        return Launcher.i18n("modpack.wizard.step.2.title");
     }
 
     public static final String MODPACK_FILE_SELECTION = "modpack.accepted";
     private static final Map<String, String> TRANSLATION = Lang.mapOf(
-            new Pair<>("minecraft/servers.dat", Main.i18n("modpack.files.servers_dat")),
-            new Pair<>("minecraft/saves", Main.i18n("modpack.files.saves")),
-            new Pair<>("minecraft/mods", Main.i18n("modpack.files.mods")),
-            new Pair<>("minecraft/config", Main.i18n("modpack.files.config")),
-            new Pair<>("minecraft/liteconfig", Main.i18n("modpack.files.liteconfig")),
-            new Pair<>("minecraft/resourcepacks", Main.i18n("modpack.files.resourcepacks")),
-            new Pair<>("minecraft/resources", Main.i18n("modpack.files.resourcepacks")),
-            new Pair<>("minecraft/options.txt", Main.i18n("modpack.files.options_txt")),
-            new Pair<>("minecraft/optionsshaders.txt", Main.i18n("modpack.files.optionsshaders_txt")),
-            new Pair<>("minecraft/mods/VoxelMods", Main.i18n("modpack.files.mods.voxelmods")),
-            new Pair<>("minecraft/dumps", Main.i18n("modpack.files.dumps")),
-            new Pair<>("minecraft/blueprints", Main.i18n("modpack.files.blueprints")),
-            new Pair<>("minecraft/scripts", Main.i18n("modpack.files.scripts"))
+            new Pair<>("minecraft/servers.dat", Launcher.i18n("modpack.files.servers_dat")),
+            new Pair<>("minecraft/saves", Launcher.i18n("modpack.files.saves")),
+            new Pair<>("minecraft/mods", Launcher.i18n("modpack.files.mods")),
+            new Pair<>("minecraft/config", Launcher.i18n("modpack.files.config")),
+            new Pair<>("minecraft/liteconfig", Launcher.i18n("modpack.files.liteconfig")),
+            new Pair<>("minecraft/resourcepacks", Launcher.i18n("modpack.files.resourcepacks")),
+            new Pair<>("minecraft/resources", Launcher.i18n("modpack.files.resourcepacks")),
+            new Pair<>("minecraft/options.txt", Launcher.i18n("modpack.files.options_txt")),
+            new Pair<>("minecraft/optionsshaders.txt", Launcher.i18n("modpack.files.optionsshaders_txt")),
+            new Pair<>("minecraft/mods/VoxelMods", Launcher.i18n("modpack.files.mods.voxelmods")),
+            new Pair<>("minecraft/dumps", Launcher.i18n("modpack.files.dumps")),
+            new Pair<>("minecraft/blueprints", Launcher.i18n("modpack.files.blueprints")),
+            new Pair<>("minecraft/scripts", Launcher.i18n("modpack.files.scripts"))
     );
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackInfoPage.java b/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackInfoPage.java
index 3911c154e..e903d6f5d 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackInfoPage.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/ui/export/ModpackInfoPage.java
@@ -26,7 +26,7 @@ import javafx.scene.control.Label;
 import javafx.scene.control.ScrollPane;
 import javafx.scene.layout.StackPane;
 import javafx.stage.FileChooser;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.auth.Account;
 import org.jackhuang.hmcl.setting.Settings;
 import org.jackhuang.hmcl.ui.Controllers;
@@ -72,8 +72,8 @@ public final class ModpackInfoPage extends StackPane implements WizardPage {
     @FXML
     private void onNext() {
         FileChooser fileChooser = new FileChooser();
-        fileChooser.setTitle(Main.i18n("modpack.wizard.step.initialization.save"));
-        fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Main.i18n("modpack"), "*.zip"));
+        fileChooser.setTitle(Launcher.i18n("modpack.wizard.step.initialization.save"));
+        fileChooser.getExtensionFilters().add(new FileChooser.ExtensionFilter(Launcher.i18n("modpack"), "*.zip"));
         File file = fileChooser.showSaveDialog(Controllers.getStage());
         if (file == null) {
             Controllers.navigate(null);
@@ -100,7 +100,7 @@ public final class ModpackInfoPage extends StackPane implements WizardPage {
 
     @Override
     public String getTitle() {
-        return Main.i18n("modpack.wizard.step.1.title");
+        return Launcher.i18n("modpack.wizard.step.1.title");
     }
 
     public static final String MODPACK_NAME = "modpack.name";
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/AppDataUpgrader.java b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/AppDataUpgrader.java
index 12df8ecb2..5ac4d50d1 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/AppDataUpgrader.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/AppDataUpgrader.java
@@ -18,12 +18,13 @@
 package org.jackhuang.hmcl.upgrade;
 
 import com.google.gson.JsonParseException;
-import com.google.gson.JsonSyntaxException;
 import com.google.gson.reflect.TypeToken;
-import org.jackhuang.hmcl.Main;
+import com.jfoenix.concurrency.JFXUtilities;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.task.FileDownloadTask;
 import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.task.Task;
+import org.jackhuang.hmcl.task.TaskExecutor;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.ui.construct.MessageBox;
 import org.jackhuang.hmcl.util.*;
@@ -55,12 +56,19 @@ public class AppDataUpgrader extends IUpgrader {
             if (mainClass != null) {
                 ArrayList<String> al = new ArrayList<>(args);
                 al.add("--noupdate");
-                AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
-                    new URLClassLoader(new URL[]{jar.toURI().toURL()},
-                            ClassLoader.getSystemClassLoader().getParent()).loadClass(mainClass)
-                            .getMethod("main", String[].class).invoke(null, new Object[]{al.toArray(new String[0])});
-                    return null;
-                });
+                ClassLoader pre = Thread.currentThread().getContextClassLoader();
+                try {
+                    AccessController.doPrivileged((PrivilegedExceptionAction<Void>) () -> {
+                        Logging.stop();
+                        ClassLoader now = new URLClassLoader(new URL[]{jar.toURI().toURL()}, ClassLoader.getSystemClassLoader().getParent());
+                        Thread.currentThread().setContextClassLoader(now);
+                        now.loadClass(mainClass).getMethod("main", String[].class).invoke(null, new Object[]{al.toArray(new String[0])});
+                        return null;
+                    });
+                } finally {
+                    Logging.start();
+                    Thread.currentThread().setContextClassLoader(pre);
+                }
                 return true;
             }
         }
@@ -97,18 +105,18 @@ public class AppDataUpgrader extends IUpgrader {
         if (!(ver instanceof IntVersionNumber))
             return;
         IntVersionNumber version = (IntVersionNumber) ver;
-        checker.requestDownloadLink().then(Task.of(Schedulers.javafx(), variables -> {
+        checker.requestDownloadLink().then(Task.of(variables -> {
             Map<String, String> map = variables.get(UpdateChecker.REQUEST_DOWNLOAD_LINK_ID);
 
-            if (MessageBox.confirm(Main.i18n("update.newest_version") + version.toString() + "\n"
-                            + Main.i18n("update.should_open_link"),
+            if (MessageBox.confirm(Launcher.i18n("update.newest_version", version.toString()) + "\n"
+                            + Launcher.i18n("update.should_open_link"),
                     MessageBox.YES_NO_OPTION) == MessageBox.YES_OPTION)
                 if (map != null && map.containsKey("jar") && !StringUtils.isBlank(map.get("jar")))
                     try {
                         String hash = null;
                         if (map.containsKey("jarsha1"))
                             hash = map.get("jarsha1");
-                        Controllers.dialog(Main.i18n("message.downloading"));
+                        Controllers.dialog(Launcher.i18n("message.downloading"));
                         if (new AppDataUpgraderJarTask(NetworkUtils.toURL(map.get("jar")), version.toString(), hash).test()) {
                             new ProcessBuilder(JavaVersion.fromCurrentEnvironment().getBinary().getAbsolutePath(), "-jar", AppDataUpgraderJarTask.getSelf(version.toString()).getAbsolutePath())
                                     .directory(new File("").getAbsoluteFile()).start();
@@ -123,31 +131,31 @@ public class AppDataUpgrader extends IUpgrader {
                         String hash = null;
                         if (map.containsKey("packsha1"))
                             hash = map.get("packsha1");
-                        Controllers.dialog(Main.i18n("message.downloading"));
-                        if (new AppDataUpgraderPackGzTask(NetworkUtils.toURL(map.get("pack")), version.toString(), hash).test()) {
+                        Task task = new AppDataUpgraderPackGzTask(NetworkUtils.toURL(map.get("pack")), version.toString(), hash);
+                        TaskExecutor executor = task.executor();
+                        JFXUtilities.runInFX(() -> Controllers.taskDialog(executor, Launcher.i18n("message.downloading"), "", null));
+                        if (executor.test()) {
                             new ProcessBuilder(JavaVersion.fromCurrentEnvironment().getBinary().getAbsolutePath(), "-jar", AppDataUpgraderPackGzTask.getSelf(version.toString()).getAbsolutePath())
                                     .directory(new File("").getAbsoluteFile()).start();
                             System.exit(0);
                         }
-                        Controllers.closeDialog();
+                        JFXUtilities.runInFX(Controllers::closeDialog);
                     } catch (IOException ex) {
                         Logging.LOG.log(Level.SEVERE, "Failed to create upgrader", ex);
                     }
                 else {
-                    String url = Main.PUBLISH;
+                    String url = Launcher.PUBLISH;
                     if (map != null)
                         if (map.containsKey(OperatingSystem.CURRENT_OS.getCheckedName()))
                             url = map.get(OperatingSystem.CURRENT_OS.getCheckedName());
                         else if (map.containsKey(OperatingSystem.UNKNOWN.getCheckedName()))
                             url = map.get(OperatingSystem.UNKNOWN.getCheckedName());
-                    if (url == null)
-                        url = Main.PUBLISH;
                     try {
                         java.awt.Desktop.getDesktop().browse(new URI(url));
                     } catch (URISyntaxException | IOException e) {
                         Logging.LOG.log(Level.SEVERE, "Failed to browse uri: " + url, e);
                         OperatingSystem.setClipboard(url);
-                        MessageBox.show(Main.i18n("update.no_browser"));
+                        MessageBox.show(Launcher.i18n("update.no_browser"));
                     }
                 }
         })).start();
@@ -155,7 +163,7 @@ public class AppDataUpgrader extends IUpgrader {
 
     public static class AppDataUpgraderPackGzTask extends Task {
 
-        public static final File BASE_FOLDER = Main.HMCL_DIRECTORY;
+        public static final File BASE_FOLDER = Launcher.HMCL_DIRECTORY;
         public static final File HMCL_VER_FILE = new File(BASE_FOLDER, "hmclver.json");
 
         public static File getSelf(String ver) {
@@ -177,7 +185,7 @@ public class AppDataUpgrader extends IUpgrader {
 
         @Override
         public Collection<Task> getDependents() {
-            return Arrays.asList(new FileDownloadTask(downloadLink, tempFile, Proxy.NO_PROXY, hash));
+            return Collections.singleton(new FileDownloadTask(downloadLink, tempFile, Proxy.NO_PROXY, hash));
         }
 
         @Override
@@ -205,7 +213,7 @@ public class AppDataUpgrader extends IUpgrader {
 
     public static class AppDataUpgraderJarTask extends Task {
 
-        public static final File BASE_FOLDER = Main.getWorkingDirectory("hmcl");
+        public static final File BASE_FOLDER = Launcher.getWorkingDirectory("hmcl");
         public static final File HMCL_VER_FILE = new File(BASE_FOLDER, "hmclver.json");
 
         public static File getSelf(String ver) {
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/NewFileUpgrader.java b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/NewFileUpgrader.java
index 728626a0a..5437a0c01 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/NewFileUpgrader.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/NewFileUpgrader.java
@@ -17,7 +17,7 @@
  */
 package org.jackhuang.hmcl.upgrade;
 
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.task.FileDownloadTask;
 import org.jackhuang.hmcl.ui.Controllers;
 import org.jackhuang.hmcl.util.Charsets;
@@ -51,7 +51,7 @@ public class NewFileUpgrader extends IUpgrader {
         URL url = requestDownloadLink();
         if (url == null) return;
         File newf = new File(url.getFile());
-        Controllers.dialog(Main.i18n("message.downloading"));
+        Controllers.dialog(Launcher.i18n("message.downloading"));
         if (new FileDownloadTask(url, newf).test()) {
             try {
                 new ProcessBuilder(newf.getCanonicalPath(), "--removeOldLauncher", getRealPath())
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChecker.java b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChecker.java
index 2fc852dbd..9dcd9eed9 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChecker.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/upgrade/UpdateChecker.java
@@ -18,7 +18,7 @@
 package org.jackhuang.hmcl.upgrade;
 
 import com.google.gson.JsonSyntaxException;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.event.Event;
 import org.jackhuang.hmcl.event.EventBus;
 import org.jackhuang.hmcl.event.OutOfDateEvent;
@@ -67,18 +67,18 @@ public final class UpdateChecker {
         return new TaskResult<VersionNumber>() {
             @Override
             public void execute() throws Exception {
-                if (Main.VERSION.contains("@"))
+                if (Launcher.VERSION.contains("@"))
                     return;
 
                 if (value == null) {
-                    versionString = NetworkUtils.doGet(NetworkUtils.toURL("https://huangyuhui.duapp.com/hmcl/update.php?version=" + Main.VERSION));
+                    versionString = NetworkUtils.doGet(NetworkUtils.toURL("https://huangyuhui.duapp.com/hmcl/update.php?version=" + Launcher.VERSION));
                     value = VersionNumber.asVersion(versionString);
                 }
 
                 if (value == null) {
                     Logging.LOG.warning("Unable to check update...");
                     if (showMessage)
-                        MessageBox.show(Main.i18n("update.failed"));
+                        MessageBox.show(Launcher.i18n("update.failed"));
                 } else if (base.compareTo(value) < 0)
                     outOfDate = true;
                 if (outOfDate)
@@ -115,7 +115,7 @@ public final class UpdateChecker {
             public void execute() {
                 if (download_link == null)
                     try {
-                        download_link = Constants.GSON.<Map<String, String>>fromJson(NetworkUtils.doGet(NetworkUtils.toURL("https://huangyuhui.duapp.com/update_link.php?type=hmcl")), Map.class);
+                        download_link = Constants.GSON.<Map<String, String>>fromJson(NetworkUtils.doGet(NetworkUtils.toURL("https://huangyuhui.duapp.com/hmcl/update_link.php")), Map.class);
                     } catch (JsonSyntaxException | IOException e) {
                         Logging.LOG.log(Level.SEVERE, "Failed to get update link.", e);
                     }
@@ -134,7 +134,7 @@ public final class UpdateChecker {
     public void checkOutdate() {
         if (outOfDate)
             if (EventBus.EVENT_BUS.fireEvent(new OutOfDateEvent(this, getNewVersion())) != Event.Result.DENY) {
-                Main.UPGRADER.download(this, getNewVersion());
+                Launcher.UPGRADER.download(this, getNewVersion());
             }
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hmcl/util/CrashReporter.java b/HMCL/src/main/java/org/jackhuang/hmcl/util/CrashReporter.java
index 594997994..7297f455c 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/util/CrashReporter.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/util/CrashReporter.java
@@ -18,7 +18,7 @@
 package org.jackhuang.hmcl.util;
 
 import javafx.application.Platform;
-import org.jackhuang.hmcl.Main;
+import org.jackhuang.hmcl.Launcher;
 import org.jackhuang.hmcl.ui.CrashWindow;
 import org.jackhuang.hmcl.ui.construct.MessageBox;
 
@@ -36,15 +36,17 @@ public class CrashReporter implements Thread.UncaughtExceptionHandler {
 
     private static final HashMap<String, String> SOURCE = new HashMap<String, String>() {
         {
-            put("javafx.fxml.LoadException", Main.i18n("crash.NoClassDefFound"));
-            put("UnsatisfiedLinkError", Main.i18n("crash.user_fault"));
-            put("java.lang.NoClassDefFoundError", Main.i18n("crash.NoClassDefFound"));
-            put("java.lang.VerifyError", Main.i18n("crash.NoClassDefFound"));
-            put("java.lang.NoSuchMethodError", Main.i18n("crash.NoClassDefFound"));
-            put("java.lang.IncompatibleClassChangeError", Main.i18n("crash.NoClassDefFound"));
-            put("java.lang.ClassFormatError", Main.i18n("crash.NoClassDefFound"));
+            put("javafx.fxml.LoadException", Launcher.i18n("crash.NoClassDefFound"));
+            put("Location is not set", Launcher.i18n("crash.NoClassDefFound"));
+            put("UnsatisfiedLinkError", Launcher.i18n("crash.user_fault"));
+            put("java.lang.NoClassDefFoundError", Launcher.i18n("crash.NoClassDefFound"));
+            put("java.lang.VerifyError", Launcher.i18n("crash.NoClassDefFound"));
+            put("java.lang.NoSuchMethodError", Launcher.i18n("crash.NoClassDefFound"));
+            put("java.lang.IncompatibleClassChangeError", Launcher.i18n("crash.NoClassDefFound"));
+            put("java.lang.ClassFormatError", Launcher.i18n("crash.NoClassDefFound"));
             put("java.lang.OutOfMemoryError", "FUCKING MEMORY LIMIT!");
-            put("Trampoline", Main.i18n("launcher.update_java"));
+            put("Trampoline", Launcher.i18n("launcher.update_java"));
+            put("com.sun.javafx.css.StyleManager.findMatchingStyles", Launcher.i18n("launcher.update_java"));
             put("NoSuchAlgorithmException", "Has your operating system been installed completely or is a ghost system?");
         }
     };
@@ -78,24 +80,22 @@ public class CrashReporter implements Thread.UncaughtExceptionHandler {
         THROWABLE_SET.add(stackTrace);
 
         try {
-            StringBuilder builder = new StringBuilder();
-            builder.append("---- Hello Minecraft! Crash Report ----\n");
-            builder.append("  Version: " + Main.VERSION + "\n");
-            builder.append("  Time: ").append(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date())).append("\n");
-            builder.append("  Thread: ").append(t.toString()).append("\n");
-            builder.append("\n  Content: \n    ");
-            builder.append(stackTrace).append("\n\n");
-            builder.append("-- System Details --\n");
-            builder.append("  Operating System: ").append(System.getProperty("os.name")).append(' ').append(OperatingSystem.SYSTEM_VERSION).append("\n");
-            builder.append("  Java Version: ").append(System.getProperty("java.version")).append(", ").append(System.getProperty("java.vendor")).append("\n");
-            builder.append("  Java VM Version: ").append(System.getProperty("java.vm.name")).append(" (").append(System.getProperty("java.vm.info")).append("), ").append(System.getProperty("java.vm.vendor")).append("\n");
-            String text = builder.toString();
+            String text = "---- Hello Minecraft! Crash Report ----\n" +
+                    "  Version: " + Launcher.VERSION + "\n" +
+                    "  Time: " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + "\n" +
+                    "  Thread: " + t.toString() + "\n" +
+                    "\n  Content: \n    " +
+                    stackTrace + "\n\n" +
+                    "-- System Details --\n" +
+                    "  Operating System: " + System.getProperty("os.name") + ' ' + OperatingSystem.SYSTEM_VERSION + "\n" +
+                    "  Java Version: " + System.getProperty("java.version") + ", " + System.getProperty("java.vendor") + "\n" +
+                    "  Java VM Version: " + System.getProperty("java.vm.name") + " (" + System.getProperty("java.vm.info") + "), " + System.getProperty("java.vm.vendor") + "\n";
 
             Logging.LOG.log(Level.SEVERE, text);
 
             if (checkThrowable(e) && !text.contains("OpenJDK")) {
                 Platform.runLater(() -> new CrashWindow(text).show());
-                if (!Main.UPDATE_CHECKER.isOutOfDate())
+                if (!Launcher.UPDATE_CHECKER.isOutOfDate())
                     reportToServer(text);
             }
         } catch (Throwable ex) {
@@ -110,7 +110,8 @@ public class CrashReporter implements Thread.UncaughtExceptionHandler {
         Thread t = new Thread(() -> {
             HashMap<String, String> map = new HashMap<>();
             map.put("crash_report", text);
-            map.put("version", Main.VERSION);
+            map.put("version", Launcher.VERSION);
+            map.put("log", Logging.getLogs());
             try {
                 String response = NetworkUtils.doPost(NetworkUtils.toURL("https://huangyuhui.duapp.com/hmcl/crash.php"), map);
                 if (StringUtils.isNotBlank(response))
diff --git a/HMCL/src/main/resources/assets/fxml/account-add.fxml b/HMCL/src/main/resources/assets/fxml/account-add.fxml
new file mode 100644
index 000000000..f6ff6f095
--- /dev/null
+++ b/HMCL/src/main/resources/assets/fxml/account-add.fxml
@@ -0,0 +1,64 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import com.jfoenix.controls.*?>
+<?import com.jfoenix.validation.RequiredFieldValidator?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+<?import org.jackhuang.hmcl.ui.FXUtils?>
+<fx:root xmlns:fx="http://javafx.com/fxml"
+         xmlns="http://javafx.com/javafx"
+         type="StackPane">
+    <JFXDialogLayout fx:id="layout">
+        <heading>
+            <Label text="%account.create"/>
+        </heading>
+        <body>
+            <GridPane vgap="15" hgap="15" style="-fx-padding: 15 0 0 0;">
+                <columnConstraints>
+                    <ColumnConstraints maxWidth="70" minWidth="70"/>
+                    <ColumnConstraints/>
+                    <ColumnConstraints minWidth="140"/>
+                </columnConstraints>
+
+                <Label text="%account.methods" GridPane.halignment="RIGHT" GridPane.columnIndex="0"
+                       GridPane.rowIndex="0"/>
+
+                <JFXComboBox fx:id="cboType" GridPane.columnIndex="1" GridPane.rowIndex="0" GridPane.columnSpan="2"/>
+
+                <Label fx:id="lblAddInjectorServer" text="%account.injector.server" GridPane.halignment="RIGHT"
+                       GridPane.columnIndex="0" GridPane.rowIndex="1"/>
+
+                <JFXComboBox fx:id="cboServers" maxHeight="25" GridPane.columnIndex="1" GridPane.rowIndex="1"/>
+
+                <Hyperlink fx:id="linkAddInjectorServer" text="%account.injector.add"
+                           onMouseClicked="#onAddInjecterServer" GridPane.columnIndex="2" GridPane.rowIndex="1"/>
+
+                <Label text="%account.username" GridPane.rowIndex="2" GridPane.columnIndex="0"/>
+
+                <JFXTextField fx:id="txtUsername" GridPane.columnIndex="1" GridPane.rowIndex="2" GridPane.columnSpan="2"
+                              FXUtils.validateWhileTextChanged="true">
+                    <validators>
+                        <RequiredFieldValidator message="%input.not_empty">
+                        </RequiredFieldValidator>
+                    </validators>
+                </JFXTextField>
+
+                <Label fx:id="lblPassword" text="%account.password" GridPane.rowIndex="3" GridPane.columnIndex="0"/>
+
+                <JFXPasswordField fx:id="txtPassword" GridPane.columnIndex="1" GridPane.rowIndex="3"
+                                  GridPane.columnSpan="2" FXUtils.validateWhileTextChanged="true">
+                    <validators>
+                        <RequiredFieldValidator message="%input.not_empty">
+                        </RequiredFieldValidator>
+                    </validators>
+                </JFXPasswordField>
+            </GridPane>
+        </body>
+        <actions>
+            <Label fx:id="lblCreationWarning"/>
+            <JFXButton onMouseClicked="#onCreationAccept" text="%button.ok" styleClass="dialog-accept"/>
+            <JFXButton onMouseClicked="#onCreationCancel" text="%button.cancel" styleClass="dialog-cancel"/>
+        </actions>
+    </JFXDialogLayout>
+    <JFXProgressBar fx:id="progressBar" visible="false" StackPane.alignment="TOP_CENTER"/>
+</fx:root>
diff --git a/HMCL/src/main/resources/assets/fxml/account-item.fxml b/HMCL/src/main/resources/assets/fxml/account-item.fxml
deleted file mode 100644
index 347b92021..000000000
--- a/HMCL/src/main/resources/assets/fxml/account-item.fxml
+++ /dev/null
@@ -1,51 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-
-<?import com.jfoenix.controls.JFXButton?>
-<?import com.jfoenix.controls.JFXProgressBar?>
-<?import com.jfoenix.controls.JFXRadioButton?>
-<?import javafx.geometry.Insets?>
-<?import javafx.scene.control.*?>
-<?import javafx.scene.image.ImageView?>
-<?import javafx.scene.layout.*?>
-<?import org.jackhuang.hmcl.ui.FXUtils?>
-<fx:root xmlns="http://javafx.com/javafx"
-         xmlns:fx="http://javafx.com/fxml"
-         type="StackPane" FXUtils.limitWidth="160" FXUtils.limitHeight="156">
-    <VBox fx:id="content">
-        <StackPane fx:id="header" VBox.vgrow="ALWAYS" style="-fx-background-radius: 2 2 0 0; -fx-background-color: rgb(255,255,255,0.87); -fx-padding: 8;">
-            <HBox StackPane.alignment="TOP_CENTER" alignment="CENTER_RIGHT">
-                <JFXProgressBar fx:id="pgsSkin" visible="false" />
-            </HBox>
-            <VBox style="-fx-padding: 8 8 0 8;">
-                <Label fx:id="lblUser" style="-fx-font-size: 15;" wrapText="true" textAlignment="JUSTIFY" />
-                <Label fx:id="lblEmail" style="-fx-font-size: 11; -fx-text-fill: gray;" />
-                <Label fx:id="lblServer" style="-fx-font-size: 11; -fx-text-fill: gray;" />
-                <Label fx:id="lblType" style="-fx-font-size: 11; -fx-text-fill: gray;" />
-            </VBox>
-        </StackPane>
-        <StackPane fx:id="body" style="-fx-background-radius: 0 0 2 2; -fx-background-color: rgb(255,255,255,0.87); -fx-padding: 8;" minHeight="40">
-            <BorderPane>
-                <left>
-                    <HBox fx:id="buttonPane" spacing="8">
-                        <JFXButton fx:id="btnRefresh" styleClass="toggle-icon4" maxWidth="30" maxHeight="30" minWidth="30" minHeight="30" prefWidth="30" prefHeight="30" />
-                        <JFXButton fx:id="btnDelete" styleClass="toggle-icon4" maxWidth="30" maxHeight="30" minWidth="30" minHeight="30" prefWidth="30" prefHeight="30" />
-                    </HBox>
-                </left>
-                <right>
-                    <HBox alignment="CENTER_RIGHT">
-                        <Label fx:id="lblCurrentAccount" text="%account.current" />
-                        <JFXRadioButton fx:id="chkSelected" BorderPane.alignment="CENTER_RIGHT" />
-                    </HBox>
-                </right>
-            </BorderPane>
-
-        </StackPane>
-    </VBox>
-    <StackPane fx:id="icon" StackPane.alignment="TOP_RIGHT" pickOnBounds="false">
-        <ImageView fx:id="portraitView" StackPane.alignment="CENTER_RIGHT" smooth="false">
-            <StackPane.margin>
-                <Insets right="12" />
-            </StackPane.margin>
-        </ImageView>
-    </StackPane>
-</fx:root>
diff --git a/HMCL/src/main/resources/assets/fxml/account.fxml b/HMCL/src/main/resources/assets/fxml/account.fxml
index 75fc2add3..98666ef13 100644
--- a/HMCL/src/main/resources/assets/fxml/account.fxml
+++ b/HMCL/src/main/resources/assets/fxml/account.fxml
@@ -1,75 +1,82 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
-<?import com.jfoenix.controls.*?>
-<?import com.jfoenix.validation.RequiredFieldValidator?>
+<?import com.jfoenix.controls.JFXButton?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>
-<?import org.jackhuang.hmcl.ui.FXUtils?>
-<fx:root xmlns="http://javafx.com/javafx"
-         xmlns:fx="http://javafx.com/fxml"
+<?import org.jackhuang.hmcl.ui.construct.ComponentList?>
+<?import com.jfoenix.controls.JFXProgressBar?>
+<fx:root xmlns:fx="http://javafx.com/fxml"
+         xmlns="http://javafx.com/javafx"
          type="StackPane">
-    <ScrollPane fitToHeight="true" fitToWidth="true" fx:id="scrollPane" hbarPolicy="NEVER">
-        <JFXMasonryPane fx:id="masonryPane" HSpacing="3" VSpacing="3" cellWidth="182" cellHeight="160">
-        </JFXMasonryPane>
-    </ScrollPane>
-    <AnchorPane pickOnBounds="false">
-        <JFXButton onMouseClicked="#addNewAccount" AnchorPane.bottomAnchor="16" AnchorPane.rightAnchor="16" buttonType="RAISED" prefWidth="40" prefHeight="40" styleClass="jfx-button-raised-round">
-            <graphic>
-                <fx:include source="/assets/svg/plus.fxml" />
-            </graphic>
-        </JFXButton>
-    </AnchorPane>
+    <VBox fx:id="rootPane">
 
-    <JFXDialog fx:id="dialog">
-        <StackPane>
-            <JFXDialogLayout>
-                <heading>
-                    <Label text="%account.create" />
-                </heading>
-                <body>
-                    <GridPane vgap="15" hgap="15" style="-fx-padding: 15 0 0 0;">
-                        <columnConstraints>
-                            <ColumnConstraints maxWidth="70" minWidth="70"/>
-                            <ColumnConstraints />
-                            <ColumnConstraints minWidth="140" />
-                        </columnConstraints>
+        <ComponentList fx:id="componentList" depth="1">
 
-                        <Label text="%account.methods" GridPane.halignment="RIGHT" GridPane.columnIndex="0" GridPane.rowIndex="0" />
+            <BorderPane> <!-- Name -->
+                <left>
+                    <VBox>
+                        <Label text="%account.methods" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </left>
+                <right>
+                    <VBox>
+                        <Label fx:id="lblType" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </right>
+            </BorderPane>
 
-                        <JFXComboBox fx:id="cboType" GridPane.columnIndex="1" GridPane.rowIndex="0" GridPane.columnSpan="2" />
+            <BorderPane> <!-- Name -->
+                <left>
+                    <VBox>
+                        <Label text="%account.character" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </left>
+                <right>
+                    <VBox>
+                        <Label fx:id="lblCharacter" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </right>
+            </BorderPane>
 
-                        <Label fx:id="lblAddInjectorServer" text="%account.injector.server" GridPane.halignment="RIGHT" GridPane.columnIndex="0" GridPane.rowIndex="1" />
+            <BorderPane fx:id="paneEmail"> <!-- Name -->
+                <left>
+                    <VBox>
+                        <Label text="%account.email" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </left>
+                <right>
+                    <VBox>
+                        <Label fx:id="lblEmail" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </right>
+            </BorderPane>
 
-                        <JFXComboBox fx:id="cboServers" maxHeight="25" GridPane.columnIndex="1" GridPane.rowIndex="1" />
+            <BorderPane fx:id="paneServer"> <!-- Name -->
+                <left>
+                    <VBox>
+                        <Label text="%account.injector.server" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </left>
+                <right>
+                    <VBox>
+                        <Label fx:id="lblServer" BorderPane.alignment="CENTER_LEFT"/>
+                    </VBox>
+                </right>
+            </BorderPane>
+        </ComponentList>
 
-                        <Hyperlink fx:id="linkAddInjectorServer" text="%account.injector.add" onMouseClicked="#onAddInjecterServer" GridPane.columnIndex="2" GridPane.rowIndex="1" />
-
-                        <Label text="%account.username" GridPane.rowIndex="2" GridPane.columnIndex="0" />
-
-                        <JFXTextField fx:id="txtUsername" GridPane.columnIndex="1" GridPane.rowIndex="2" GridPane.columnSpan="2" FXUtils.validateWhileTextChanged="true">
-                            <validators>
-                                <RequiredFieldValidator message="%input.not_empty">
-                                </RequiredFieldValidator>
-                            </validators>
-                        </JFXTextField>
-
-                        <Label fx:id="lblPassword" text="%account.password" GridPane.rowIndex="3" GridPane.columnIndex="0" />
-
-                        <JFXPasswordField fx:id="txtPassword" GridPane.columnIndex="1" GridPane.rowIndex="3" GridPane.columnSpan="2" FXUtils.validateWhileTextChanged="true">
-                            <validators>
-                                <RequiredFieldValidator message="%input.not_empty">
-                                </RequiredFieldValidator>
-                            </validators>
-                        </JFXPasswordField>
-                    </GridPane>
-                </body>
-                <actions>
-                    <Label fx:id="lblCreationWarning" />
-                    <JFXButton onMouseClicked="#onCreationAccept" text="%button.ok" styleClass="dialog-accept" />
-                    <JFXButton onMouseClicked="#onCreationCancel" text="%button.cancel" styleClass="dialog-cancel" />
-                </actions>
-            </JFXDialogLayout>
-            <JFXProgressBar fx:id="progressBar" visible="false" StackPane.alignment="TOP_CENTER" />
-        </StackPane>
-    </JFXDialog>
+    </VBox>
+    <BorderPane pickOnBounds="false" style="-fx-padding: 4;">
+        <left>
+            <JFXButton BorderPane.alignment="BOTTOM_LEFT" fx:id="btnDelete" onMouseClicked="#onDelete"
+                       styleClass="toggle-icon4" maxWidth="30" maxHeight="30" minWidth="30" minHeight="30"
+                       prefWidth="30" prefHeight="30"/>
+        </left>
+        <right>
+            <JFXButton BorderPane.alignment="BOTTOM_RIGHT" fx:id="btnRefresh" onMouseClicked="#onRefresh"
+                       styleClass="toggle-icon4" maxWidth="30" maxHeight="30" minWidth="30" minHeight="30"
+                       prefWidth="30" prefHeight="30"/>
+        </right>
+    </BorderPane>
+    <JFXProgressBar fx:id="progressBar" StackPane.alignment="TOP_CENTER" visible="false" />
 </fx:root>
diff --git a/HMCL/src/main/resources/assets/fxml/authlib-injector-servers.fxml b/HMCL/src/main/resources/assets/fxml/authlib-injector-servers.fxml
index 05ea1066d..e37c03188 100644
--- a/HMCL/src/main/resources/assets/fxml/authlib-injector-servers.fxml
+++ b/HMCL/src/main/resources/assets/fxml/authlib-injector-servers.fxml
@@ -32,9 +32,11 @@
                         <Label text="%account.injector.add" />
                     </heading>
                     <body>
-                        <JFXTextField fx:id="txtServerIp" promptText="%account.injector.server_ip" labelFloat="true">
+                        <JFXTextField fx:id="txtServerIp" promptText="%account.injector.server_ip">
                             <validators>
                                 <URLValidator message="%input.url">
+                                </URLValidator>
+                                <URLValidator message="%input.url.http">
                                     <protocols>
                                         <String fx:value="http" />
                                         <String fx:value="https" />
diff --git a/HMCL/src/main/resources/assets/fxml/decorator.fxml b/HMCL/src/main/resources/assets/fxml/decorator.fxml
index 5bce78d2b..fdbda6f8f 100644
--- a/HMCL/src/main/resources/assets/fxml/decorator.fxml
+++ b/HMCL/src/main/resources/assets/fxml/decorator.fxml
@@ -20,26 +20,14 @@
             maxWidth="800">
         <center>
             <StackPane fx:id="drawerWrapper" styleClass="jfx-decorator-drawer" FXUtils.overflowHidden="true">
-                <JFXDialog fx:id="dialog" overlayClose="false" />
                 <BorderPane>
                     <left>
                         <StackPane minWidth="200" maxWidth="200" styleClass="jfx-decorator-content-container">
                             <BorderPane fx:id="leftRootPane">
                                 <center>
-                                    <BorderPane styleClass="gray-background">
-                                        <center>
-                                            <AdvancedListBox fx:id="leftPane"/>
-                                        </center>
-                                        <bottom>
-                                            <BorderPane fx:id="menuBottomBar">
-                                                <left>
-                                                    <HBox fx:id="updatePane" visible="false" style="-fx-background-color: red;" alignment="CENTER_LEFT">
-                                                        <Label text="%update.found" style="-fx-text-fill: white; -fx-font-size: 16px;" />
-                                                    </HBox>
-                                                </left>
-                                            </BorderPane>
-                                        </bottom>
-                                    </BorderPane>
+                                    <StackPane styleClass="gray-background">
+                                        <AdvancedListBox fx:id="leftPane"/>
+                                    </StackPane>
                                 </center>
                                 <right>
                                     <Rectangle height="${leftRootPane.height}" width="1" fill="gray"/>
diff --git a/HMCL/src/main/resources/assets/fxml/main.fxml b/HMCL/src/main/resources/assets/fxml/main.fxml
index ab850ee43..6d1ff1a6b 100644
--- a/HMCL/src/main/resources/assets/fxml/main.fxml
+++ b/HMCL/src/main/resources/assets/fxml/main.fxml
@@ -1,38 +1,32 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
 <?import com.jfoenix.controls.JFXButton?>
-<?import com.jfoenix.controls.JFXListView?>
 <?import com.jfoenix.controls.JFXMasonryPane?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.StackPane?>
 <?import javafx.scene.layout.VBox?>
+<?import com.jfoenix.controls.JFXSpinner?>
 <fx:root
         maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity"
         type="StackPane" pickOnBounds="false"
         xmlns="http://javafx.com/javafx/8.0.112" xmlns:fx="http://javafx.com/fxml/1">
-    <ScrollPane fitToHeight="true" fitToWidth="true" fx:id="scrollPane" hbarPolicy="NEVER">
-        <JFXMasonryPane fx:id="masonryPane" HSpacing="3" VSpacing="3" cellWidth="182" cellHeight="160">
-        </JFXMasonryPane>
-    </ScrollPane>
-    <VBox style="-fx-padding: 15;" spacing="15" pickOnBounds="false" alignment="BOTTOM_RIGHT">
-        <JFXButton prefWidth="40" prefHeight="40" buttonType="RAISED" fx:id="btnRefresh" styleClass="jfx-button-raised-round">
-            <graphic>
-                <fx:include source="/assets/svg/refresh.fxml" />
-            </graphic>
-        </JFXButton>
-        <JFXButton prefWidth="40" prefHeight="40" buttonType="RAISED" fx:id="btnAdd" styleClass="jfx-button-raised-round">
-            <graphic>
-                <fx:include source="/assets/svg/plus.fxml" />
-            </graphic>
-        </JFXButton>
-    </VBox>
-
-
-    <JFXListView fx:id="versionList" styleClass="option-list-view" onMouseClicked="#onVersionManagement"
-                 maxWidth="150.0" minWidth="150.0">
-        <Label text="%version.manage.rename"/>
-        <Label text="%version.manage.remove"/>
-        <Label text="%modpack.export"/>
-        <Label text="%folder.game"/>
-    </JFXListView>
+    <JFXSpinner fx:id="spinner" styleClass="first-spinner" />
+    <StackPane fx:id="contentPane">
+        <ScrollPane fitToHeight="true" fitToWidth="true" fx:id="scrollPane" hbarPolicy="NEVER">
+            <JFXMasonryPane fx:id="masonryPane" HSpacing="3" VSpacing="3" cellWidth="182" cellHeight="160">
+            </JFXMasonryPane>
+        </ScrollPane>
+        <VBox style="-fx-padding: 15;" spacing="15" pickOnBounds="false" alignment="BOTTOM_RIGHT">
+            <JFXButton prefWidth="40" prefHeight="40" buttonType="RAISED" fx:id="btnRefresh" styleClass="jfx-button-raised-round">
+                <graphic>
+                    <fx:include source="/assets/svg/refresh.fxml" />
+                </graphic>
+            </JFXButton>
+            <JFXButton prefWidth="40" prefHeight="40" buttonType="RAISED" fx:id="btnAdd" styleClass="jfx-button-raised-round">
+                <graphic>
+                    <fx:include source="/assets/svg/plus.fxml" />
+                </graphic>
+            </JFXButton>
+        </VBox>
+    </StackPane>
 </fx:root>
diff --git a/HMCL/src/main/resources/assets/fxml/version-list-item.fxml b/HMCL/src/main/resources/assets/fxml/version-list-item.fxml
index bc3fa3872..34109b66b 100644
--- a/HMCL/src/main/resources/assets/fxml/version-list-item.fxml
+++ b/HMCL/src/main/resources/assets/fxml/version-list-item.fxml
@@ -31,7 +31,7 @@
         </left>
         <right>
             <HBox alignment="CENTER" pickOnBounds="false">
-                <JFXButton fx:id="btnSettings" maxWidth="40" minWidth="40" prefWidth="40" styleClass="toggle-icon4" onMouseClicked="#onSettings">
+                <JFXButton fx:id="btnSettings" maxWidth="40" minWidth="40" prefWidth="40" styleClass="toggle-icon4">
                     <graphic>
                         <fx:include source="/assets/svg/gear.fxml" />
                     </graphic>
diff --git a/HMCL/src/main/resources/assets/fxml/version/version-settings.fxml b/HMCL/src/main/resources/assets/fxml/version/version-settings.fxml
index 75e5d8eff..29a22ecf8 100644
--- a/HMCL/src/main/resources/assets/fxml/version/version-settings.fxml
+++ b/HMCL/src/main/resources/assets/fxml/version/version-settings.fxml
@@ -5,7 +5,6 @@
 <?import javafx.geometry.Insets?>
 <?import javafx.scene.control.*?>
 <?import javafx.scene.image.Image?>
-<?import javafx.scene.image.ImageView?>
 <?import javafx.scene.layout.*?>
 <?import org.jackhuang.hmcl.ui.construct.*?>
 <?import org.jackhuang.hmcl.ui.*?>
diff --git a/HMCL/src/main/resources/assets/lang/I18N.properties b/HMCL/src/main/resources/assets/lang/I18N.properties
index 382514688..54a07b9e1 100644
--- a/HMCL/src/main/resources/assets/lang/I18N.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N.properties
@@ -29,6 +29,7 @@ about.open_source=Open Source
 about.open_source.statement=GPL v3 (https://github.com/huanghongxun/HMCL/)
 
 account=Accounts
+account.character=character
 account.choose=Choose a character
 account.current=Current
 account.create=Create a new account
@@ -136,6 +137,7 @@ input.email=The username must be an e-mail.
 input.number=Must be a number.
 input.not_empty=Input Requrired!
 input.url=Must be a valid URL.
+input.url.http=Only Http or Https accepted.
 
 install=Install New Game
 install.failed=Failed to install
diff --git a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
index 6c5f09b7a..0f0ab104e 100644
--- a/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
+++ b/HMCL/src/main/resources/assets/lang/I18N_zh_CN.properties
@@ -29,6 +29,7 @@ about.open_source=开源
 about.open_source.statement=GPL v3 (https://github.com/huanghongxun/HMCL/)
 
 account=账户
+account.character=角色
 account.choose=选择一个角色
 account.current=当前账户
 account.create=新建账户
@@ -136,6 +137,7 @@ input.email=用户名必须是邮箱
 input.number=必须是数字
 input.not_empty=必填项
 input.url=必须是合法的链接
+input.url.http=只支持Http或Https协议
 
 install=添加游戏
 install.failed=安装失败
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/Account.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/Account.java
index 9bc41f637..389a64d1f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/Account.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/Account.java
@@ -17,6 +17,8 @@
  */
 package org.jackhuang.hmcl.auth;
 
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
 import java.util.Map;
 import java.util.UUID;
 
@@ -64,4 +66,13 @@ public abstract class Account {
     public abstract Map<Object, Object> toStorage();
 
     public abstract void clearCache();
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("username", getUsername())
+                .append("character", getCharacter())
+                .append("uuid", getUUID())
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilAccount.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilAccount.java
index 5af8b4524..f6dcbb7ca 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilAccount.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/auth/yggdrasil/YggdrasilAccount.java
@@ -17,7 +17,6 @@
  */
 package org.jackhuang.hmcl.auth.yggdrasil;
 
-import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import org.jackhuang.hmcl.auth.*;
 import org.jackhuang.hmcl.util.StringUtils;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultGameBuilder.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultGameBuilder.java
index 811fc972f..b3f838b47 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultGameBuilder.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/DefaultGameBuilder.java
@@ -18,7 +18,6 @@
 package org.jackhuang.hmcl.download;
 
 import org.jackhuang.hmcl.download.game.*;
-import org.jackhuang.hmcl.game.SimpleVersionProvider;
 import org.jackhuang.hmcl.game.Version;
 import org.jackhuang.hmcl.task.ParallelTask;
 import org.jackhuang.hmcl.task.Task;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
index 709cb38b0..bad83a75f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MaintainTask.java
@@ -17,7 +17,6 @@
  */
 package org.jackhuang.hmcl.download;
 
-import org.jackhuang.hmcl.game.GameRepository;
 import org.jackhuang.hmcl.game.Library;
 import org.jackhuang.hmcl.game.Version;
 import org.jackhuang.hmcl.task.TaskResult;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
index b233d1da0..e725f3fab 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/MojangDownloadProvider.java
@@ -28,7 +28,7 @@ import org.jackhuang.hmcl.download.optifine.OptiFineVersionList;
  */
 public class MojangDownloadProvider implements DownloadProvider {
 
-    private boolean isChina;
+    private final boolean isChina;
 
     public MojangDownloadProvider(boolean isChina) {
         this.isChina = isChina;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeInstallTask.java
index 489ef4009..d82b27713 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/forge/ForgeInstallTask.java
@@ -47,7 +47,7 @@ public final class ForgeInstallTask extends TaskResult<Version> {
     private final DefaultDependencyManager dependencyManager;
     private final Version version;
     private final File installer = new File("forge-installer.jar").getAbsoluteFile();
-    private ForgeRemoteVersion remote;
+    private final ForgeRemoteVersion remote;
     private final List<Task> dependents = new LinkedList<>();
     private final List<Task> dependencies = new LinkedList<>();
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameAssetDownloadTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameAssetDownloadTask.java
index be65124e9..160342b31 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameAssetDownloadTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameAssetDownloadTask.java
@@ -82,7 +82,7 @@ public final class GameAssetDownloadTask extends Task {
             AssetObject assetObject = entry.getValue();
             String url = dependencyManager.getDownloadProvider().getAssetBaseURL() + assetObject.getLocation();
             if (!FileUtils.makeDirectory(file.getAbsoluteFile().getParentFile())) {
-                Logging.LOG.log(Level.SEVERE, "Unable to create new file {0}, because parent directory cannot be created", file);
+                Logging.LOG.log(Level.SEVERE, "Unable to create new file " + file + ", because parent directory cannot be created");
                 continue;
             }
             if (file.isDirectory())
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLibrariesTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLibrariesTask.java
index eabd1b2f8..46baf515c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLibrariesTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/GameLibrariesTask.java
@@ -20,9 +20,7 @@ package org.jackhuang.hmcl.download.game;
 import org.jackhuang.hmcl.download.AbstractDependencyManager;
 import org.jackhuang.hmcl.game.Library;
 import org.jackhuang.hmcl.game.Version;
-import org.jackhuang.hmcl.task.FileDownloadTask;
 import org.jackhuang.hmcl.task.Task;
-import org.jackhuang.hmcl.util.NetworkUtils;
 
 import java.io.File;
 import java.util.LinkedList;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java
index 4648b5c6c..401ef63cb 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/game/LibraryDownloadTask.java
@@ -4,8 +4,6 @@ import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
 import org.jackhuang.hmcl.download.AbstractDependencyManager;
 import org.jackhuang.hmcl.game.Library;
 import org.jackhuang.hmcl.task.FileDownloadTask;
-import org.jackhuang.hmcl.task.Scheduler;
-import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.task.Task;
 import org.jackhuang.hmcl.util.*;
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
index 50479681b..3cf3b2b22 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderInstallTask.java
@@ -41,7 +41,7 @@ public final class LiteLoaderInstallTask extends TaskResult<Version> {
 
     private final DefaultDependencyManager dependencyManager;
     private final Version version;
-    private LiteLoaderRemoteVersion remote;
+    private final LiteLoaderRemoteVersion remote;
     private final List<Task> dependents = new LinkedList<>();
     private final List<Task> dependencies = new LinkedList<>();
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderVersionList.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderVersionList.java
index 4e48e1be4..d3b243e46 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderVersionList.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/liteloader/LiteLoaderVersionList.java
@@ -18,7 +18,6 @@
 package org.jackhuang.hmcl.download.liteloader;
 
 import org.jackhuang.hmcl.download.DownloadProvider;
-import org.jackhuang.hmcl.download.RemoteVersion;
 import org.jackhuang.hmcl.download.VersionList;
 import org.jackhuang.hmcl.task.GetTask;
 import org.jackhuang.hmcl.task.Task;
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
index 29617a14c..1a930d1f8 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/download/optifine/OptiFineInstallTask.java
@@ -38,7 +38,7 @@ public final class OptiFineInstallTask extends TaskResult<Version> {
 
     private final DefaultDependencyManager dependencyManager;
     private final Version version;
-    private OptiFineRemoteVersion remote;
+    private final OptiFineRemoteVersion remote;
     private final List<Task> dependents = new LinkedList<>();
     private final List<Task> dependencies = new LinkedList<>();
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/Event.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/Event.java
index 248334cc8..c55de587a 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/Event.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/Event.java
@@ -17,6 +17,8 @@
  */
 package org.jackhuang.hmcl.event;
 
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
 import java.util.Objects;
 
 /**
@@ -28,13 +30,13 @@ public class Event {
     /**
      * The object on which the Event initially occurred.
      */
-    protected transient Object  source;
+    protected final transient Object source;
 
     /**
      * Constructs a prototypical Event.
      *
      * @param source The object on which the Event initially occurred.
-     * @throws  NullPointerException  if source is null.
+     * @throws NullPointerException if source is null.
      */
     public Event(Object source) {
         Objects.requireNonNull(source);
@@ -54,10 +56,10 @@ public class Event {
     /**
      * Returns a String representation of this Event.
      *
-     * @return  A a String representation of this Event.
+     * @return A a String representation of this Event.
      */
     public String toString() {
-        return getClass().getName() + "[source=" + source + "]";
+        return new ToStringBuilder(this).append("source", source).toString();
     }
 
     private boolean canceled;
@@ -72,7 +74,6 @@ public class Event {
     }
 
     /**
-     *
      * @param canceled new value
      * @throws UnsupportedOperationException if trying to cancel a non-cancelable event.
      */
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/EventBus.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/EventBus.java
index ea3ede46e..944bbe52a 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/EventBus.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/EventBus.java
@@ -17,6 +17,8 @@
  */
 package org.jackhuang.hmcl.event;
 
+import org.jackhuang.hmcl.util.Logging;
+
 import java.util.HashMap;
 
 /**
@@ -36,6 +38,8 @@ public final class EventBus {
 
     @SuppressWarnings("unchecked")
     public Event.Result fireEvent(Event obj) {
+        Logging.LOG.info(obj + " gets fired");
+
         return channel((Class<Event>) obj.getClass()).fireEvent(obj);
     }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/GameJsonParseFailedEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/GameJsonParseFailedEvent.java
index 011bda099..d070df240 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/GameJsonParseFailedEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/GameJsonParseFailedEvent.java
@@ -17,6 +17,8 @@
  */
 package org.jackhuang.hmcl.event;
 
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
 import java.io.File;
 
 /**
@@ -49,4 +51,13 @@ public final class GameJsonParseFailedEvent extends Event {
     public String getVersion() {
         return version;
     }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("jsonFile", jsonFile)
+                .append("version", version)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/JVMLaunchFailedEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/JVMLaunchFailedEvent.java
index 70e75d259..4bf6ff40d 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/JVMLaunchFailedEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/JVMLaunchFailedEvent.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.event;
 
 import org.jackhuang.hmcl.util.ManagedProcess;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 /**
  * This event gets fired when we launch the JVM and it got crashed.
@@ -44,4 +45,12 @@ public class JVMLaunchFailedEvent extends Event {
     public ManagedProcess getProcess() {
         return process;
     }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("process", process)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/LoadedOneVersionEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/LoadedOneVersionEvent.java
index e71bac3a6..47e44da64 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/LoadedOneVersionEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/LoadedOneVersionEvent.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.event;
 
 import org.jackhuang.hmcl.game.Version;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 /**
  * This event gets fired when a minecraft version has been loaded.
@@ -48,4 +49,12 @@ public final class LoadedOneVersionEvent extends Event {
     public boolean hasResult() {
         return true;
     }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("version", version)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessExitedAbnormallyEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessExitedAbnormallyEvent.java
index 410ee1759..e8e5b0d82 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessExitedAbnormallyEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessExitedAbnormallyEvent.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.event;
 
 import org.jackhuang.hmcl.util.ManagedProcess;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 /**
  * This event gets fired when a JavaProcess exited abnormally and the exit code is not zero.
@@ -44,4 +45,12 @@ public final class ProcessExitedAbnormallyEvent extends Event {
     public ManagedProcess getProcess() {
         return process;
     }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("process", process)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessStoppedEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessStoppedEvent.java
index 7786c13d5..2fbe901b8 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessStoppedEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/ProcessStoppedEvent.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.event;
 
 import org.jackhuang.hmcl.util.ManagedProcess;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 /**
  * This event gets fired when minecraft process exited successfully and the exit code is 0.
@@ -44,4 +45,12 @@ public class ProcessStoppedEvent extends Event {
     public ManagedProcess getProcess() {
         return process;
     }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("process", process)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RefreshingVersionsEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RefreshingVersionsEvent.java
index f85c09d29..2f7291b6f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RefreshingVersionsEvent.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RefreshingVersionsEvent.java
@@ -35,4 +35,8 @@ public final class RefreshingVersionsEvent extends Event {
         super(source);
     }
 
+    @Override
+    public boolean hasResult() {
+        return true;
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RemoveVersionEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RemoveVersionEvent.java
new file mode 100644
index 000000000..3deab872c
--- /dev/null
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RemoveVersionEvent.java
@@ -0,0 +1,59 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.event;
+
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
+/**
+ * This event gets fired when a minecraft version is being removed.
+ * <br>
+ * This event is fired on the {@link org.jackhuang.hmcl.event.EventBus#EVENT_BUS}
+ *
+ * @author huangyuhui
+ */
+public class RemoveVersionEvent extends Event {
+
+    private final String version;
+
+    /**
+     *
+     * @param source {@link org.jackhuang.hmcl.game.GameRepository}
+     * @param version the version id.
+     */
+    public RemoveVersionEvent(Object source, String version) {
+        super(source);
+        this.version = version;
+    }
+
+    public String getVersion() {
+        return version;
+    }
+
+    @Override
+    public boolean hasResult() {
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("version", version)
+                .toString();
+    }
+}
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RenameVersionEvent.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RenameVersionEvent.java
new file mode 100644
index 000000000..fb2597c39
--- /dev/null
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/event/RenameVersionEvent.java
@@ -0,0 +1,65 @@
+/*
+ * Hello Minecraft! Launcher.
+ * Copyright (C) 2018  huangyuhui <huanghongxun2008@126.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see {http://www.gnu.org/licenses/}.
+ */
+package org.jackhuang.hmcl.event;
+
+import org.jackhuang.hmcl.util.ToStringBuilder;
+
+/**
+ * This event gets fired when a minecraft version is being removed.
+ * <br>
+ * This event is fired on the {@link org.jackhuang.hmcl.event.EventBus#EVENT_BUS}
+ *
+ * @author huangyuhui
+ */
+public class RenameVersionEvent extends Event {
+
+    private final String from, to;
+
+    /**
+     *
+     * @param source {@link org.jackhuang.hmcl.game.GameRepository}
+     * @param from the version id.
+     */
+    public RenameVersionEvent(Object source, String from, String to) {
+        super(source);
+        this.from = from;
+        this.to = to;
+    }
+
+    public String getFromVersion() {
+        return from;
+    }
+
+    public String getToVersion() {
+        return to;
+    }
+
+    @Override
+    public boolean hasResult() {
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("source", source)
+                .append("from", from)
+                .append("to", to)
+                .toString();
+    }
+}
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
index 4c510f006..9278516a6 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/DefaultGameRepository.java
@@ -24,6 +24,7 @@ import org.jackhuang.hmcl.task.Schedulers;
 import org.jackhuang.hmcl.util.Constants;
 import org.jackhuang.hmcl.util.FileUtils;
 import org.jackhuang.hmcl.util.Logging;
+import org.jackhuang.hmcl.util.ToStringBuilder;
 
 import java.io.File;
 import java.io.IOException;
@@ -61,7 +62,7 @@ public class DefaultGameRepository implements GameRepository {
     @Override
     public Version getVersion(String id) {
         if (!hasVersion(id))
-            throw new VersionNotFoundException("Version '" + id + "' does not exist.");
+            throw new VersionNotFoundException("Version '" + id + "' does not exist in " + versions.keySet() + ".");
         return versions.get(id);
     }
 
@@ -116,6 +117,9 @@ public class DefaultGameRepository implements GameRepository {
 
     @Override
     public boolean renameVersion(String from, String to) {
+        if (EventBus.EVENT_BUS.fireEvent(new RenameVersionEvent(this, from, to)) == Event.Result.DENY)
+            return false;
+
         try {
             Version fromVersion = getVersion(from);
             File fromDir = getVersionRoot(from);
@@ -145,6 +149,8 @@ public class DefaultGameRepository implements GameRepository {
     public boolean removeVersionFromDisk(String id) {
         if (!versions.containsKey(id))
             return true;
+        if (EventBus.EVENT_BUS.fireEvent(new RemoveVersionEvent(this, id)) == Event.Result.DENY)
+            return false;
         File file = getVersionRoot(id);
         if (!file.exists())
             return true;
@@ -201,7 +207,7 @@ public class DefaultGameRepository implements GameRepository {
                         try {
                             FileUtils.writeText(json, Constants.GSON.toJson(version));
                         } catch (Exception e) {
-                            Logging.LOG.log(Level.WARNING, "Ignoring version {0} because wrong id {1} is set and cannot correct it.", new Object[]{id, version.getId()});
+                            Logging.LOG.log(Level.WARNING, "Ignoring version " + id + " because wrong id " + version.getId() + " is set and cannot correct it.");
                             continue;
                         }
                     }
@@ -217,7 +223,7 @@ public class DefaultGameRepository implements GameRepository {
                         EventBus.EVENT_BUS.fireEvent(new LoadedOneVersionEvent(this, resolved)) != Event.Result.DENY)
                     versions.put(version.getId(), version);
             } catch (VersionNotFoundException e) {
-                Logging.LOG.log(Level.WARNING, "Ignoring version {0} because it inherits from a nonexistent version.", version.getId());
+                Logging.LOG.log(Level.WARNING, "Ignoring version " + version.getId() + " because it inherits from a nonexistent version.");
             }
         }
 
@@ -227,7 +233,9 @@ public class DefaultGameRepository implements GameRepository {
 
     @Override
     public void refreshVersions() {
-        EventBus.EVENT_BUS.fireEvent(new RefreshingVersionsEvent(this));
+        if (EventBus.EVENT_BUS.fireEvent(new RefreshingVersionsEvent(this)) == Event.Result.DENY)
+            return;
+
         Schedulers.newThread().schedule(() -> {
             refreshVersionsImpl();
             EventBus.EVENT_BUS.fireEvent(new RefreshedVersionsEvent(this));
@@ -337,4 +345,11 @@ public class DefaultGameRepository implements GameRepository {
         return getModpackConfiguration(version).exists();
     }
 
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this)
+                .append("versions", versions == null ? null : versions.keySet())
+                .append("baseDirectory", baseDirectory)
+                .toString();
+    }
 }
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LibrariesDownloadInfo.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LibrariesDownloadInfo.java
index 219c5e93b..e3b0e64f4 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LibrariesDownloadInfo.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/LibrariesDownloadInfo.java
@@ -39,7 +39,7 @@ public final class LibrariesDownloadInfo {
 
     public LibrariesDownloadInfo(LibraryDownloadInfo artifact, Map<String, LibraryDownloadInfo> classifiers) {
         this.artifact = artifact;
-        this.classifiers = new HashMap<>(classifiers);
+        this.classifiers = classifiers == null ? null : new HashMap<>(classifiers);
     }
 
     public LibraryDownloadInfo getArtifact() {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/StringArgument.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/StringArgument.java
index 02aff228e..acfd86e10 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/StringArgument.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/StringArgument.java
@@ -45,7 +45,7 @@ public final class StringArgument implements Argument {
     @Override
     public List<String> toString(Map<String, String> keys, Map<String, Boolean> features) {
         String res = argument;
-        Pattern pattern = Pattern.compile("\\$\\{(.*?)\\}");
+        Pattern pattern = Pattern.compile("\\$\\{(.*?)}");
         Matcher m = pattern.matcher(argument);
         while (m.find()) {
             String entry = m.group();
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/Version.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/Version.java
index 06202d055..e4ccd4928 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/game/Version.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/game/Version.java
@@ -156,7 +156,7 @@ public class Version implements Comparable<Version>, Validation {
 
         // To maximize the compatibility.
         if (!resolvedSoFar.add(id)) {
-            Logging.LOG.log(Level.WARNING, "Found circular dependency versions: {0}", resolvedSoFar);
+            Logging.LOG.log(Level.WARNING, "Found circular dependency versions: " + resolvedSoFar);
             return this;
         }
 
@@ -233,6 +233,11 @@ public class Version implements Comparable<Version>, Validation {
         return id.compareTo(o.id);
     }
 
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this).append("id", id).toString();
+    }
+
     @Override
     public void validate() throws JsonParseException {
         if (StringUtils.isBlank(id))
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/MultiMCModpackInstallTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/MultiMCModpackInstallTask.java
index b2539f3b3..b796d1e9f 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/MultiMCModpackInstallTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/mod/MultiMCModpackInstallTask.java
@@ -44,23 +44,20 @@ import java.util.Objects;
  */
 public final class MultiMCModpackInstallTask extends Task {
 
-    private final DefaultDependencyManager dependencyManager;
     private final File zipFile;
     private final MultiMCInstanceConfiguration manifest;
     private final String name;
-    private final File run;
     private final DefaultGameRepository repository;
     private final List<Task> dependencies = new LinkedList<>();
     private final List<Task> dependents = new LinkedList<>();
     
     public MultiMCModpackInstallTask(DefaultDependencyManager dependencyManager, File zipFile, MultiMCInstanceConfiguration manifest, String name) {
-        this.dependencyManager = dependencyManager;
         this.zipFile = zipFile;
         this.manifest = manifest;
         this.name = name;
         this.repository = dependencyManager.getGameRepository();
-        this.run = repository.getRunDirectory(name);
 
+        File run = repository.getRunDirectory(name);
         File json = repository.getModpackConfiguration(name);
         if (repository.hasVersion(name) && !json.exists())
             throw new IllegalArgumentException("Version " + name + " already exists.");
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
index 6887466c8..066401682 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/FileDownloadTask.java
@@ -119,7 +119,7 @@ public class FileDownloadTask extends Task {
     @Override
     public void execute() throws Exception {
         URL currentURL = url;
-        Logging.LOG.log(Level.FINER, "Downloading {0} to {1}", new Object[] { currentURL, file });
+        Logging.LOG.log(Level.FINER, "Downloading " + currentURL + " to " + file);
         Exception exception = null;
 
         for (int repeat = 0; repeat < retry; repeat++) {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java
index a04f4135c..0495a2c9c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java
@@ -84,7 +84,7 @@ public final class GetTask extends TaskResult<String> {
         Exception exception = null;
         for (int time = 0; time < retry; ++time) {
             if (time > 0)
-                Logging.LOG.log(Level.WARNING, "Failed to download, repeat times: {0}", time);
+                Logging.LOG.log(Level.WARNING, "Failed to download, repeat times: " + time);
             try {
                 updateProgress(0);
                 HttpURLConnection conn = NetworkUtils.createConnection(url, proxy);
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Schedulers.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Schedulers.java
index 7ba61c2b9..d6ed22131 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Schedulers.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Schedulers.java
@@ -18,6 +18,7 @@
 package org.jackhuang.hmcl.task;
 
 import org.jackhuang.hmcl.util.Constants;
+import org.jackhuang.hmcl.util.Logging;
 
 import java.util.concurrent.*;
 
@@ -35,9 +36,7 @@ public final class Schedulers {
     private static synchronized ExecutorService getCachedExecutorService() {
         if (CACHED_EXECUTOR == null)
             CACHED_EXECUTOR = new ThreadPoolExecutor(0, Integer.MAX_VALUE,
-                    60, TimeUnit.SECONDS, new SynchronousQueue<>(), runnable -> {
-                return Executors.defaultThreadFactory().newThread(runnable);
-            });
+                    60, TimeUnit.SECONDS, new SynchronousQueue<>(), Executors.defaultThreadFactory());
 
         return CACHED_EXECUTOR;
     }
@@ -117,6 +116,8 @@ public final class Schedulers {
     static final Scheduler NONE = new SchedulerImpl(Constants.emptyConsumer());
 
     public static synchronized void shutdown() {
+        Logging.LOG.info("Shutting down executor services.");
+
         if (CACHED_EXECUTOR != null)
             CACHED_EXECUTOR.shutdown();
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java
index 1f614007b..281fb3dd0 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/Task.java
@@ -205,6 +205,13 @@ public abstract class Task {
         return new TaskExecutor(this);
     }
 
+    public final TaskExecutor executor(boolean start) {
+        TaskExecutor executor = new TaskExecutor(this);
+        if (start)
+            executor.start();
+        return executor;
+    }
+
     public final TaskExecutor executor(TaskListener taskListener) {
         TaskExecutor executor = new TaskExecutor(this);
         executor.addTaskListener(taskListener);
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java
index c85ea57b6..f3a0ace83 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java
@@ -134,7 +134,7 @@ public final class TaskExecutor {
         task.setState(Task.TaskState.READY);
 
         if (task.getSignificance().shouldLog())
-            Logging.LOG.log(Level.FINE, "Executing task: {0}", task.getName());
+            Logging.LOG.log(Level.FINE, "Executing task: " + task.getName());
 
         taskListeners.forEach(it -> it.onReady(task));
 
@@ -176,7 +176,7 @@ public final class TaskExecutor {
 
             flag = true;
             if (task.getSignificance().shouldLog()) {
-                Logging.LOG.log(Level.FINER, "Task finished: {0}", task.getName());
+                Logging.LOG.log(Level.FINER, "Task finished: " + task.getName());
             }
 
             task.onDone().fireEvent(new TaskEvent(this, task, false));
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/IntVersionNumber.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/IntVersionNumber.java
index c96425e11..b2c5e966d 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/IntVersionNumber.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/IntVersionNumber.java
@@ -43,11 +43,14 @@ public final class IntVersionNumber extends VersionNumber {
         if (!(o instanceof IntVersionNumber))
             return 0;
         IntVersionNumber other = (IntVersionNumber) o;
-        int len = Math.min(this.version.size(), other.version.size());
-        for (int i = 0; i < len; ++i)
-            if (!version.get(i).equals(other.version.get(i)))
-                return version.get(i).compareTo(other.version.get(i));
-        return Integer.compare(this.version.size(), other.version.size());
+        int len = Math.max(this.version.size(), other.version.size());
+        for (int i = 0; i < len; ++i) {
+            int thisInt = Lang.get(this.version, i).orElse(0);
+            int otherInt = Lang.get(other.version, i).orElse(0);
+            if (thisInt != otherInt)
+                return Integer.compare(thisInt, otherInt);
+        }
+        return 0;
     }
 
     @Override
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Log4jLevel.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Log4jLevel.java
index 98145f463..c6295c1cc 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Log4jLevel.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Log4jLevel.java
@@ -54,8 +54,8 @@ public enum Log4jLevel {
     public boolean lessOrEqual(Log4jLevel level) {
         return this.level <= level.level;
     }
-    public static final Pattern MINECRAFT_LOGGER = Pattern.compile("\\[(?<timestamp>[0-9:]+)\\] \\[[^/]+/(?<level>[^\\]]+)\\]");
-    public static final Pattern MINECRAFT_LOGGER_CATEGORY = Pattern.compile("\\[(?<timestamp>[0-9:]+)\\] \\[[^/]+/(?<level>[^\\]]+)\\] \\[(?<category>[^\\]]+)\\]");
+    public static final Pattern MINECRAFT_LOGGER = Pattern.compile("\\[(?<timestamp>[0-9:]+)] \\[[^/]+/(?<level>[^]]+)]");
+    public static final Pattern MINECRAFT_LOGGER_CATEGORY = Pattern.compile("\\[(?<timestamp>[0-9:]+)] \\[[^/]+/(?<level>[^]]+)] \\[(?<category>[^]]+)]");
     public static final String JAVA_SYMBOL = "([a-zA-Z_$][a-zA-Z\\d_$]*\\.)+[a-zA-Z_$][a-zA-Z\\d_$]*";
 
     public static Log4jLevel guessLevel(String line) {
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Logging.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Logging.java
index 6e1005bb8..26b88cac9 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Logging.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/Logging.java
@@ -20,7 +20,6 @@ package org.jackhuang.hmcl.util;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
-import java.text.MessageFormat;
 import java.text.SimpleDateFormat;
 import java.util.Date;
 import java.util.logging.*;
@@ -32,9 +31,13 @@ import java.util.logging.*;
 public final class Logging {
 
     public static final Logger LOG;
+    private static final ByteArrayOutputStream OUTPUT_STREAM = new ByteArrayOutputStream();
 
     static {
         LOG = Logger.getLogger("HMCL");
+    }
+
+    public static void start() {
         LOG.setLevel(Level.FINER);
         LOG.setUseParentHandlers(false);
 
@@ -51,6 +54,25 @@ public final class Logging {
         consoleHandler.setLevel(Level.FINER);
         consoleHandler.setFormatter(DefaultFormatter.INSTANCE);
         LOG.addHandler(consoleHandler);
+
+        StreamHandler streamHandler = new StreamHandler(OUTPUT_STREAM, DefaultFormatter.INSTANCE) {
+            @Override
+            public synchronized void publish(LogRecord record) {
+                super.publish(record);
+                flush();
+            }
+        };
+        streamHandler.setLevel(Level.FINEST);
+        LOG.addHandler(streamHandler);
+    }
+
+    public static void stop() {
+        for (Handler handler : LOG.getHandlers())
+            LOG.removeHandler(handler);
+    }
+
+    public static String getLogs() {
+        return OUTPUT_STREAM.toString();
     }
 
     static final class DefaultFormatter extends Formatter {
@@ -63,7 +85,7 @@ public final class Logging {
             String date = format.format(new Date(record.getMillis()));
             String log = String.format("[%s] [%s.%s/%s] %s%n",
                     date, record.getSourceClassName(), record.getSourceMethodName(),
-                    record.getLevel().getName(), MessageFormat.format(record.getMessage(), record.getParameters())
+                    record.getLevel().getName(), record.getMessage()
             );
             ByteArrayOutputStream builder = new ByteArrayOutputStream();
             if (record.getThrown() != null)
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/VersionNumber.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/VersionNumber.java
index d9fefc1f3..a510439ab 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/VersionNumber.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/VersionNumber.java
@@ -40,13 +40,11 @@ public abstract class VersionNumber implements Comparable<VersionNumber> {
             throw new IllegalArgumentException("The version " + version + " is malformed, only dots and digits are allowed.");
 
         String[] s = version.split("\\.");
-        int last = s.length - 1;
-        for (int i = s.length - 1; i >= 0; --i)
-            if (Integer.parseInt(s[i]) == 0)
-                last = i;
-        ArrayList<Integer> versions = new ArrayList<>(last + 1);
-        for (int i = 0; i <= last; ++i)
-            versions.add(Integer.parseInt(s[i]));
+        ArrayList<Integer> versions = new ArrayList<>(s.length);
+        for (String value : s) versions.add(Integer.parseInt(value));
+        while (!versions.isEmpty() && versions.get(versions.size() - 1) == 0)
+            versions.remove(versions.size() - 1);
+
         return new IntVersionNumber(Collections.unmodifiableList(versions));
     }
 
diff --git a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ZipEngine.java b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ZipEngine.java
index ba11d3712..c121b576c 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ZipEngine.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/util/ZipEngine.java
@@ -70,10 +70,10 @@ public final class ZipEngine implements Closeable {
      * modified pathName, null if you dont want this file zipped
      */
     private void putDirectoryImpl(File source, String basePath, BiFunction<String, Boolean, String> pathNameCallback) throws IOException {
-        File[] files;
+        File[] files = null;
         if (source.isDirectory())
             files = source.listFiles();
-        else
+        else if (source.isFile())
             files = new File[] { source };
 
         if (files == null)