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 b046ba6ab..a6b317301 100644
--- a/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
+++ b/HMCL/src/main/java/org/jackhuang/hmcl/game/LauncherHelper.java
@@ -142,9 +142,12 @@ public final class LauncherHelper {
             @Override
             public void onTerminate() {
                 Platform.runLater(() -> {
-                    Controllers.dialog(I18nException.getStackTrace(executor.getLastException()),
-                            scriptFile == null ? Main.i18n("launch.failed") : Main.i18n("version.launch_script.failed"),
-                            MessageBox.ERROR_MESSAGE, Controllers::closeDialog);
+                    if (executor.getLastException() != null)
+                        Controllers.dialog(I18nException.getStackTrace(executor.getLastException()),
+                                scriptFile == null ? Main.i18n("launch.failed") : Main.i18n("version.launch_script.failed"),
+                                MessageBox.ERROR_MESSAGE, Controllers::closeDialog);
+                    else
+                        Controllers.closeDialog();
                 });
             }
         });
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 9cd1d0a2e..6caf8dc31 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/GetTask.java
@@ -95,7 +95,9 @@ public final class GetTask extends TaskResult<String> {
                 while ((len = input.read(buf)) != -1) {
                     baos.write(buf, 0, len);
                     read += len;
-                    updateProgress(read, size);
+
+                    if (size >= 0)
+                        updateProgress(read, size);
 
                     if (Thread.currentThread().isInterrupted())
                         return;
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 eb02d8d8d..5fca59c70 100644
--- a/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java
+++ b/HMCLCore/src/main/java/org/jackhuang/hmcl/task/TaskExecutor.java
@@ -184,7 +184,6 @@ public final class TaskExecutor {
             }
         } catch (InterruptedException e) {
             if (task.getSignificance().shouldLog()) {
-                lastException = e;
                 Logging.LOG.log(Level.FINE, "Task aborted: " + task.getName());
                 task.onDone().fireEvent(new TaskEvent(this, task, true));
                 taskListeners.forEach(it -> it.onFailed(task, e));