diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Launcher.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Launcher.java
index 7db7f66d1..82b671fa4 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Launcher.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Launcher.java
@@ -50,7 +50,7 @@ public final class Launcher {
         Thread.currentThread().setName("launcher");
         println("*** " + Main.makeTitle() + " ***");
 
-        LogWindow.instance.setTerminateGame(Utils::shutdownForcely);
+        LogWindow.instance.setTerminateGame(() -> Utils.shutdownForcely(1));
 
         boolean showInfo = false;
         String classPath = "";
@@ -75,6 +75,7 @@ public final class Launcher {
                 if (!logFile.exists()) logFile.createNewFile();
                 FileOutputStream tc = new FileOutputStream(logFile);
                 DoubleOutputStream out = new DoubleOutputStream(tc, System.out);
+                Launcher l = new Launcher();
                 System.setOut(new LauncherPrintStream(out));
                 DoubleOutputStream err = new DoubleOutputStream(tc, System.err);
                 System.setErr(new LauncherPrintStream(err));
@@ -132,5 +133,6 @@ public final class Launcher {
         }
 
         println("*** Game Exited ***");
+        System.exit(1);
     }
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
index 09bbb8c33..b195213f1 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/Main.java
@@ -193,7 +193,12 @@ public final class Main implements Runnable {
                     });
             }
 
-            MainFrame.showMainFrame(Settings.isFirstLoad());
+            try {
+                MainFrame.showMainFrame(Settings.isFirstLoad());
+            } catch (Throwable t) {
+                new CrashReporter(false).uncaughtException(Thread.currentThread(), t);
+                System.exit(1);
+            }
         }
     }
 
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/utils/installers/optifine/OptiFineInstaller.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/utils/installers/optifine/OptiFineInstaller.java
index b43fd3845..4e43b24bf 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/utils/installers/optifine/OptiFineInstaller.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/utils/installers/optifine/OptiFineInstaller.java
@@ -33,7 +33,7 @@ import org.jackhuang.hellominecraft.launcher.version.MinecraftVersion;
  *
  * @author huangyuhui
  */
-public class OptiFineInstaller extends Task implements PreviousResultRegistrar<File>  {
+public class OptiFineInstaller extends Task implements PreviousResultRegistrar<File> {
 
     public File installer;
     public Profile profile;
@@ -51,26 +51,26 @@ public class OptiFineInstaller extends Task implements PreviousResultRegistrar<F
 
     @Override
     public boolean executeTask() {
-        if(profile == null || profile.getSelectedMinecraftVersion() == null) {
+        if (profile == null || profile.getSelectedMinecraftVersion() == null) {
             setFailReason(new RuntimeException(C.i18n("install.no_version")));
             return false;
         }
-        MinecraftVersion mv = (MinecraftVersion)profile.getSelectedMinecraftVersion().clone();
-        
+        MinecraftVersion mv = (MinecraftVersion) profile.getSelectedMinecraftVersion().clone();
+
         try {
             mv.inheritsFrom = mv.id;
             mv.jar = mv.jar == null ? mv.id : mv.jar;
             mv.libraries.clear();
             mv.libraries.add(0, new MinecraftLibrary("optifine:OptiFine:" + version));
             FileUtils.copyFile(installer, new File(profile.getCanonicalGameDir(), "libraries/optifine/OptiFine/" + version + "/OptiFine-" + version + ".jar"));
-                
+
             mv.id += "-" + version;
-            if(new ZipFile(installer).getEntry("optifine/OptiFineTweaker.class") != null) {
-                if(!mv.mainClass.startsWith("net.minecraft.launchwrapper.")) {
+            if (new ZipFile(installer).getEntry("optifine/OptiFineTweaker.class") != null) {
+                if (!mv.mainClass.startsWith("net.minecraft.launchwrapper.")) {
                     mv.mainClass = "net.minecraft.launchwrapper.Launch";
-                    mv.minecraftArguments += " --tweakClass optifine.OptiFineTweaker";
                     mv.libraries.add(1, new MinecraftLibrary("net.minecraft:launchwrapper:1.7"));
                 }
+                mv.minecraftArguments += " --tweakClass optifine.OptiFineTweaker";
             }
             File loc = new File(profile.getCanonicalGameDir(), "versions/" + mv.id);
             loc.mkdirs();
@@ -87,12 +87,13 @@ public class OptiFineInstaller extends Task implements PreviousResultRegistrar<F
     public String getInfo() {
         return "Optifine Installer";
     }
-    
+
     ArrayList<PreviousResult<File>> pre = new ArrayList();
+
     @Override
     public Task registerPreviousResult(PreviousResult pr) {
         pre.add(pr);
         return this;
     }
-    
+
 }
diff --git a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/views/GameSettingsPanel.java b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/views/GameSettingsPanel.java
index 43075d8c3..a33940c7d 100644
--- a/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/views/GameSettingsPanel.java
+++ b/HMCL/src/main/java/org/jackhuang/hellominecraft/launcher/views/GameSettingsPanel.java
@@ -28,6 +28,7 @@ import java.awt.dnd.DropTargetListener;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.ItemEvent;
+import java.awt.event.KeyEvent;
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -1439,7 +1440,8 @@ btnRefreshLiteLoader.addActionListener(new java.awt.event.ActionListener() {
     }//GEN-LAST:event_btnRemoveModActionPerformed
 
     private void lstExternalModsKeyPressed(java.awt.event.KeyEvent evt) {//GEN-FIRST:event_lstExternalModsKeyPressed
-        btnRemoveModActionPerformed(null);
+        if(evt.getKeyCode() == KeyEvent.VK_DELETE)
+            btnRemoveModActionPerformed(null);
     }//GEN-LAST:event_lstExternalModsKeyPressed
 
     private void lblModInfoMouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_lblModInfoMouseClicked
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/LauncherPrintStream.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/LauncherPrintStream.java
index 5055ea923..fda09cc75 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/LauncherPrintStream.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/LauncherPrintStream.java
@@ -41,7 +41,8 @@ public class LauncherPrintStream extends PrintStream {
             a1.accept(paramString);
     }
 
-    public final void addPrintListener(Consumer<String> paraml) {
+    public final LauncherPrintStream addPrintListener(Consumer<String> paraml) {
         this.printListeners.add(paraml);
+        return this;
     }
 }
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/Utils.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/Utils.java
index 3923fba08..54181b9cc 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/Utils.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/Utils.java
@@ -168,12 +168,12 @@ public final class Utils {
     /**
      * In order to fight against the permission manager.
      */
-    public static void shutdownForcely() {
+    public static void shutdownForcely(int status) {
         try {
             Class z = Class.forName("java.lang.Shutdown");
             Method exit = z.getDeclaredMethod("exit", int.class);
             exit.setAccessible(true);
-            exit.invoke(z, 0);
+            exit.invoke(z, status);
         } catch (ClassNotFoundException | NoSuchMethodException | SecurityException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
             MessageBox.Show(C.i18n("launcher.exit_failed"));
             e.printStackTrace();
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/FalseFunction.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/FalseFunction.java
index 166c17c07..1b73751a8 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/FalseFunction.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/FalseFunction.java
@@ -23,7 +23,7 @@ package org.jackhuang.hellominecraft.utils.functions;
 public class FalseFunction implements NonFunction<Boolean> {
 
     @Override
-    public Boolean onDone() {
+    public Boolean apply() {
         return Boolean.FALSE;
     }
     
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/NonFunction.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/NonFunction.java
index 276d36e2f..1e8f0cada 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/NonFunction.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/NonFunction.java
@@ -22,5 +22,5 @@ package org.jackhuang.hellominecraft.utils.functions;
  */
 public interface NonFunction<T> {
 
-    T onDone();
+    T apply();
 }
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/TrueFunction.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/TrueFunction.java
index 7eba17947..d81a6f333 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/TrueFunction.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/functions/TrueFunction.java
@@ -27,7 +27,7 @@ public class TrueFunction implements NonFunction<Boolean> {
     private TrueFunction(){}
     
     @Override
-    public Boolean onDone() {
+    public Boolean apply() {
         return Boolean.TRUE;
     }
     
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/JavaProcessMonitor.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/JavaProcessMonitor.java
index 8a5312f78..4d7fe02b9 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/JavaProcessMonitor.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/JavaProcessMonitor.java
@@ -40,6 +40,9 @@ public class JavaProcessMonitor {
 
     public void start() {
         Event<JavaProcess> event = (sender2, t) -> {
+            if(t.getExitCode() != 0) {
+                MessageBox.Show(C.i18n("launch.exited_abnormally"));
+            }
             processThreadStopped((ProcessThread) sender2, false);
             return true;
         };
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/ProcessThread.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/ProcessThread.java
index 5913e0cb4..e5787445e 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/ProcessThread.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/utils/system/ProcessThread.java
@@ -16,7 +16,6 @@
  */
 package org.jackhuang.hellominecraft.utils.system;
 
-import java.io.BufferedReader;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.io.UnsupportedEncodingException;
@@ -47,23 +46,44 @@ public class ProcessThread extends Thread {
 
     @Override
     public void run() {
-        InputStream in = null;
-        BufferedReader br = null;
-        if (enableReading)
-            in = readError ? p.getRawProcess().getErrorStream() : p.getRawProcess().getInputStream();
         try {
-            if (enableReading)
+            InputStreamReader br;
+            if (enableReading) {
+                InputStream in = readError ? p.getRawProcess().getErrorStream() : p.getRawProcess().getInputStream();
                 try {
-                    br = new BufferedReader(new InputStreamReader(in, System.getProperty("sun.jnu.encoding", "UTF-8")));
+                    br = new InputStreamReader(in, System.getProperty("sun.jnu.encoding", "UTF-8"));
                 } catch (UnsupportedEncodingException ex) {
                     HMCLog.warn("Unsupported encoding: " + System.getProperty("sun.jnu.encoding", "UTF-8"), ex);
-                    br = new BufferedReader(new InputStreamReader(in));
+                    br = new InputStreamReader(in);
                 }
+            }
+            else br = null;
 
-            String line;
+            int ch;
+            String line = "";
             while (p.isRunning())
-                if (enableReading)
-                    while ((line = br.readLine()) != null) {
+                if (br != null)
+                    while ((ch = br.read()) != -1)
+                        if (ch == '\n') {
+                            printlnEvent.execute(line);
+                            if (readError) {
+                                System.err.println(line);
+                                p.getStdErrLines().add(line);
+                            } else {
+                                System.out.println(line);
+                                p.getStdOutLines().add(line);
+                            }
+                            line = "";
+                        } else
+                            line += (char) ch;
+                else
+                    try {
+                        Thread.sleep(1);
+                    } catch (Exception e) {
+                    }
+            if (br != null)
+                while ((ch = br.read()) != -1)
+                    if (ch == '\n') {
                         printlnEvent.execute(line);
                         if (readError) {
                             System.err.println(line);
@@ -72,29 +92,12 @@ public class ProcessThread extends Thread {
                             System.out.println(line);
                             p.getStdOutLines().add(line);
                         }
-                    }
-                else
-                    try {
-                        Thread.sleep(1);
-                    } catch (Exception e) {
-                    }
-            if (enableReading)
-                while ((line = br.readLine()) != null) {
-                    printlnEvent.execute(line);
-                    if (readError) {
-                        System.err.println(line);
-                        p.getStdErrLines().add(line);
-                    } else {
-                        System.out.println(line);
-                        p.getStdOutLines().add(line);
-                    }
-                }
+                        line = "";
+                    } else
+                        line += (char) ch;
             stopEvent.execute(p);
         } catch (Exception e) {
             e.printStackTrace();
         }
     }
-
-    private void stopped() {
-    }
 }
diff --git a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/views/LogWindow.java b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/views/LogWindow.java
index 0ed6a6622..ccf1eb747 100644
--- a/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/views/LogWindow.java
+++ b/HMCLAPI/src/main/java/org/jackhuang/hellominecraft/views/LogWindow.java
@@ -204,7 +204,8 @@ public class LogWindow extends javax.swing.JFrame {
     }//GEN-LAST:event_btnClearActionPerformed
 
     private void formWindowClosed(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_formWindowClosed
-        if (listener != null && listener.onDone()) Utils.shutdownForcely();
+        if (listener != null && listener.apply() && terminateGameListener != null)
+            terminateGameListener.run();
     }//GEN-LAST:event_formWindowClosed
 
     private void btnCopyActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_btnCopyActionPerformed
diff --git a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N.properties b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N.properties
index de2bf61dc..cbf290b78 100644
--- a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N.properties
+++ b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N.properties
@@ -24,6 +24,7 @@ launch.circular_dependency_versions=\u53d1\u73b0\u6e38\u620f\u7248\u672c\u5faa\u
 launch.not_finished_downloading_libraries=\u672a\u5b8c\u6210\u6e38\u620f\u4f9d\u8d56\u5e93\u7684\u4e0b\u8f7d\uff0c\u8fd8\u8981\u7ee7\u7eed\u542f\u52a8\u6e38\u620f\u5417\uff1f
 launch.not_finished_decompressing_natives=\u672a\u80fd\u89e3\u538b\u6e38\u620f\u672c\u5730\u5e93\uff0c\u8fd8\u8981\u7ee7\u7eed\u542f\u52a8\u6e38\u620f\u5417\uff1f
 launch.wrong_javadir=\u9519\u8bef\u7684Java\u8def\u5f84\uff0c\u5c06\u81ea\u52a8\u91cd\u7f6e\u4e3a\u9ed8\u8ba4Java\u8def\u5f84\u3002
+launch.exited_abnormally=\u6e38\u620f\u975e\u6b63\u5e38\u9000\u51fa\uff0c\u8bf7\u67e5\u770b\u65e5\u5fd7\u6587\u4ef6\uff0c\u6216\u8054\u7cfb\u4ed6\u4eba\u5bfb\u6c42\u5e2e\u52a9\u3002
 
 install.no_version=\u672a\u627e\u5230\u8981\u5b89\u88c5\u7684\u5bf9\u5e94MC\u7248\u672c
 install.no_version_if_intall=\u672a\u627e\u5230\u8981\u5b89\u88c5\u7684\u5bf9\u5e94MC\u7248\u672c\uff0c\u662f\u5426\u81ea\u52a8\u5b89\u88c5\u9700\u8981\u7684MC\u7248\u672c\uff1f
diff --git a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_en_US.properties b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_en_US.properties
index 04a957a3c..5c0a2b06d 100644
--- a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_en_US.properties
+++ b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_en_US.properties
@@ -24,6 +24,7 @@ launch.circular_dependency_versions=Found circular dependency versions, please c
 launch.not_finished_downloading_libraries=Did not finish downloading libraries, continue launching game?
 launch.not_finished_decompressing_natives=Did not finish decompressing native libraries, continue launching game?
 launch.wrong_javadir=Wrong Java Dir, will reset to default Java dir.
+launch.exited_abnormally=Game exited abnormally, please visit the log, or ask someone for help.
 
 install.no_version=The version is not found.
 install.no_version_if_intall=The needed version is not found, should install the version automatically?
diff --git a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_CN.properties b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_CN.properties
index 3f4f6f487..ae8cb4bd2 100644
--- a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_CN.properties
+++ b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_CN.properties
@@ -24,6 +24,7 @@ launch.circular_dependency_versions=\u53d1\u73b0\u6e38\u620f\u7248\u672c\u5faa\u
 launch.not_finished_downloading_libraries=\u672a\u5b8c\u6210\u6e38\u620f\u4f9d\u8d56\u5e93\u7684\u4e0b\u8f7d\uff0c\u8fd8\u8981\u7ee7\u7eed\u542f\u52a8\u6e38\u620f\u5417\uff1f
 launch.not_finished_decompressing_natives=\u672a\u80fd\u89e3\u538b\u6e38\u620f\u672c\u5730\u5e93\uff0c\u8fd8\u8981\u7ee7\u7eed\u542f\u52a8\u6e38\u620f\u5417\uff1f
 launch.wrong_javadir=\u9519\u8bef\u7684Java\u8def\u5f84\uff0c\u5c06\u81ea\u52a8\u91cd\u7f6e\u4e3a\u9ed8\u8ba4Java\u8def\u5f84\u3002
+launch.exited_abnormally=\u6e38\u620f\u975e\u6b63\u5e38\u9000\u51fa\uff0c\u8bf7\u67e5\u770b\u65e5\u5fd7\u6587\u4ef6\uff0c\u6216\u8054\u7cfb\u4ed6\u4eba\u5bfb\u6c42\u5e2e\u52a9\u3002
 
 install.no_version=\u672a\u627e\u5230\u8981\u5b89\u88c5\u7684\u5bf9\u5e94MC\u7248\u672c
 install.no_version_if_intall=\u672a\u627e\u5230\u8981\u5b89\u88c5\u7684\u5bf9\u5e94MC\u7248\u672c\uff0c\u662f\u5426\u81ea\u52a8\u5b89\u88c5\u9700\u8981\u7684MC\u7248\u672c\uff1f
diff --git a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_TW.properties b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_TW.properties
index 9691cb77e..286262241 100644
--- a/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_TW.properties
+++ b/HMCLAPI/src/main/resources/org/jackhuang/hellominecraft/launcher/I18N_zh_TW.properties
@@ -24,6 +24,7 @@ launch.circular_dependency_versions=\u767c\u73fe\u904a\u6232\u7248\u672c\u5faa\u
 launch.not_finished_downloading_libraries=\u672a\u5b8c\u6210\u904a\u6232\u4f9d\u8cf4\u5eab\u7684\u4e0b\u8f09\uff0c\u9084\u8981\u7e7c\u7e8c\u555f\u52d5\u904a\u6232\u55ce\uff1f
 launch.not_finished_decompressing_natives=\u672a\u80fd\u89e3\u58d3\u904a\u6232\u672c\u5730\u5eab\uff0c\u9084\u8981\u7e7c\u7e8c\u555f\u52d5\u904a\u6232\u55ce\uff1f
 launch.wrong_javadir=\u932f\u8aa4\u7684Java\u8def\u5f91\uff0c\u5c07\u81ea\u52d5\u91cd\u7f6e\u70ba\u9ed8\u8a8dJava\u8def\u5f91\u3002
+launch.exited_abnormally=\u904a\u6232\u975e\u6b63\u5e38\u9000\u51fa\uff0c\u8acb\u67e5\u770b\u65e5\u8a8c\u6587\u4ef6\uff0c\u6216\u806f\u7e6b\u4ed6\u4eba\u5c0b\u6c42\u5e6b\u52a9\u3002
 
 install.no_version=\u672a\u627e\u5230\u8981\u5b89\u88dd\u7684\u5c0d\u61c9MC\u7248\u672c
 install.no_version_if_intall=\u672a\u627e\u5230\u8981\u5b89\u88dd\u7684\u5c0d\u61c9MC\u7248\u672c\uff0c\u662f\u5426\u81ea\u52a8\u5b89\u88c5\u9700\u8981\u7684MC\u7248\u672c\uff1f