diff --git a/app/build.gradle b/app/build.gradle
index 22f991a..41929b9 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -12,8 +12,8 @@ android {
         applicationId "com.vectras.vm"
         minSdk minApi
         targetSdk targetApi
-        versionCode 77
-        versionName "3.7.3"
+        versionCode 78
+        versionName "3.7.4"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
 
diff --git a/app/src/main/java/com/vectras/vm/creator/VMCreatorActivity.java b/app/src/main/java/com/vectras/vm/creator/VMCreatorActivity.java
index fbb7bdf..95dc235 100644
--- a/app/src/main/java/com/vectras/vm/creator/VMCreatorActivity.java
+++ b/app/src/main/java/com/vectras/vm/creator/VMCreatorActivity.java
@@ -68,7 +68,7 @@ public class VMCreatorActivity extends AppCompatActivity {
     public boolean addromnowdone = false;
     private boolean created = false;
     boolean modify;
-    private boolean isImportingCVBI = false;
+    private boolean isProcessingFile = false;
     public static DataMainRoms current;
     private String thumbnailPath = "";
     private String vmID = VMManager.idGenerator();
@@ -348,7 +348,7 @@ public class VMCreatorActivity extends AppCompatActivity {
     }
 
     private void onBack() {
-        if (isImportingCVBI) return;
+        if (isProcessingFile) return;
 
         if (!created && !modify) {
             new Thread(() -> FileUtils.delete(new File (AppConfig.vmFolder + vmID))).start();
@@ -359,7 +359,7 @@ public class VMCreatorActivity extends AppCompatActivity {
 
     public void onDestroy() {
         if (!created && !modify) {
-            new Thread(() -> FileUtils.deleteDirectory(AppConfig.vmFolder + vmID)).start();
+            new Thread(() -> FileUtils.delete(new File(AppConfig.vmFolder + vmID))).start();
         }
         modify = false;
         super.onDestroy();
@@ -394,6 +394,7 @@ public class VMCreatorActivity extends AppCompatActivity {
 
                     executor.execute(() -> {
                         try {
+                            isProcessingFile = true;
                             String _filename = FileUtils.getFileNameFromUri(this, uri);
                             if (_filename == null || _filename.isEmpty()) {
                                 _filename = String.valueOf(System.currentTimeMillis());
@@ -420,11 +421,8 @@ public class VMCreatorActivity extends AppCompatActivity {
                                     null));
                             Log.e(TAG, "isoPicker: " + e.getMessage());
                         } finally {
-                            runOnUiThread(() -> {
-                                if (!isFinishing() && !isDestroyed()) {
-                                    progressDialog.dismiss();
-                                }
-                            });
+                            isProcessingFile = false;
+                            runOnUiThread(() -> DialogUtils.safeDismiss(this, progressDialog));
                         }
                     });
                 } else {
@@ -492,6 +490,7 @@ public class VMCreatorActivity extends AppCompatActivity {
 
                 executor.execute(() -> {
                     try {
+                        isProcessingFile = true;
                         String _filename = FileUtils.getFileNameFromUri(this, uri);
                         if (_filename == null || _filename.isEmpty()) {
                             _filename = String.valueOf(System.currentTimeMillis());
@@ -524,11 +523,8 @@ public class VMCreatorActivity extends AppCompatActivity {
                                 null));
                         Log.e(TAG, "filePicker: " + e.getMessage());
                     } finally {
-                        runOnUiThread(() -> {
-                            if (!isFinishing() && !isDestroyed()) {
-                                progressDialog.dismiss();
-                            }
-                        });
+                        isProcessingFile = false;
+                        runOnUiThread(() -> DialogUtils.safeDismiss(this, progressDialog));
                     }
                 });
             });
@@ -727,6 +723,7 @@ public class VMCreatorActivity extends AppCompatActivity {
 
         executor.execute(() -> {
             try {
+                isProcessingFile = true;
                 ImageUtils.convertToPng(this, uri, AppConfig.vmFolder + vmID + "/thumbnail.png");
 
                 thumbnailPath = AppConfig.vmFolder + vmID + "/thumbnail.png";
@@ -742,10 +739,8 @@ public class VMCreatorActivity extends AppCompatActivity {
                         null,
                         null));
             } finally {
-                runOnUiThread(() -> {
-                    if (!isImportingCVBI && progressDialog.isShowing() && !isFinishing() && !isDestroyed())
-                        progressDialog.dismiss();
-                });
+                isProcessingFile = false;
+                runOnUiThread(() -> DialogUtils.safeDismiss(this, progressDialog));
             }
         });
     }
@@ -917,7 +912,7 @@ public class VMCreatorActivity extends AppCompatActivity {
             return;
         }
 
-        isImportingCVBI = true;
+        isProcessingFile = true;
 
         View progressView = LayoutInflater.from(this).inflate(R.layout.dialog_progress_style, null);
         TextView progressText = progressView.findViewById(R.id.progress_text);
@@ -948,11 +943,10 @@ public class VMCreatorActivity extends AppCompatActivity {
             );
 
             runOnUiThread(() -> {
-                if (progressDialog.isShowing() && !isFinishing() && !isDestroyed())
-                    progressDialog.dismiss();
+                DialogUtils.safeDismiss(this, progressDialog);
 
                 if (isFinishing() || isDestroyed()) {
-                    new Thread(() -> FileUtils.deleteDirectory(AppConfig.vmFolder + vmID)).start();
+                    new Thread(() -> FileUtils.delete(new File(AppConfig.vmFolder + vmID))).start();
                     return;
                 }
 
@@ -975,7 +969,7 @@ public class VMCreatorActivity extends AppCompatActivity {
 
     @SuppressLint("SetTextI18n")
     private void afterExtractCVBIFile(String _filename) {
-        isImportingCVBI = false;
+        isProcessingFile = false;
         binding.ivIcon.setEnabled(true);
         try {
             if (!FileUtils.isFileExists(AppConfig.vmFolder + vmID + "/rom-data.json")) {
diff --git a/app/src/main/java/com/vectras/vm/setupwizard/SetupWizard2Activity.java b/app/src/main/java/com/vectras/vm/setupwizard/SetupWizard2Activity.java
index a0f621f..c4c724a 100644
--- a/app/src/main/java/com/vectras/vm/setupwizard/SetupWizard2Activity.java
+++ b/app/src/main/java/com/vectras/vm/setupwizard/SetupWizard2Activity.java
@@ -418,7 +418,7 @@ public class SetupWizard2Activity extends AppCompatActivity {
                     HashMap<String, Object> mmap;
                     mmap = new Gson().fromJson(response, new TypeToken<HashMap<String, Object>>() {
                     }.getType());
-                    if (mmap.containsKey("aarch64") && mmap.containsKey("armhf") && mmap.containsKey("amd64") && mmap.containsKey("x86")) {
+                    if (mmap != null && mmap.containsKey("aarch64") && mmap.containsKey("armhf") && mmap.containsKey("amd64") && mmap.containsKey("x86")) {
                         if (DeviceUtils.isArm()) {
                             bootstrapFileLink = Objects.requireNonNull(mmap.get(DeviceUtils.is64bit() ? "aarch64" : "armhf")).toString();
                         } else {
diff --git a/app/src/main/java/com/vectras/vm/utils/DialogUtils.java b/app/src/main/java/com/vectras/vm/utils/DialogUtils.java
index 9e5ccb4..43330a4 100644
--- a/app/src/main/java/com/vectras/vm/utils/DialogUtils.java
+++ b/app/src/main/java/com/vectras/vm/utils/DialogUtils.java
@@ -3,7 +3,7 @@ package com.vectras.vm.utils;
 import static android.content.Intent.ACTION_VIEW;
 
 import android.app.Activity;
-import android.app.AlertDialog;
+import androidx.appcompat.app.AlertDialog;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
@@ -23,7 +23,6 @@ import android.widget.TextView;
 import androidx.preference.PreferenceManager;
 
 import com.google.android.material.color.MaterialColors;
-import com.vectras.vm.AppConfig;
 import com.vectras.vm.R;
 
 public class DialogUtils {
@@ -247,6 +246,12 @@ public class DialogUtils {
         return false;
     }
 
+    public static void safeDismiss(Activity activity, AlertDialog dialog) {
+        if (activity.isFinishing() || activity.isDestroyed()) return;
+        if (dialog == null || !dialog.isShowing() || dialog.getWindow() == null) return;
+        if (dialog.getWindow().getDecorView().getWindowToken() != null) dialog.dismiss();
+    }
+
     public static void joinTelegram(Context _context) {
         SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(_context);
         if (!prefs.getBoolean("tgDialog", false)) {
diff --git a/app/src/main/res/layout/dialog_layout.xml b/app/src/main/res/layout/dialog_layout.xml
index ec17cd8..dca2178 100644
--- a/app/src/main/res/layout/dialog_layout.xml
+++ b/app/src/main/res/layout/dialog_layout.xml
@@ -1,73 +1,72 @@
 <?xml version="1.0" encoding="utf-8"?>
-<com.google.android.material.card.MaterialCardView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    style="@style/Widget.Material3.CardView.Filled"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    app:cardBackgroundColor="?attr/colorSurfaceContainer">
-    <LinearLayout
+    android:background="?attr/colorSurfaceContainer"
+    android:gravity="center_horizontal"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <ImageView
+        android:id="@+id/icon"
+        android:layout_width="24dp"
+        android:layout_height="24dp"
+        android:src="@drawable/add_24px" />
+
+    <TextView
+        android:id="@+id/tv_title"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:padding="16dp"
-        android:orientation="vertical"
-        android:gravity="center_horizontal">
-        <ImageView
-            android:id="@+id/icon"
-            android:layout_width="24dp"
-            android:layout_height="24dp"
-            android:src="@drawable/add_24px"/>
+        android:gravity="center"
+        android:paddingVertical="16dp"
+        android:text="@string/oops"
+        android:textColor="?attr/colorControlNormal"
+        android:textSize="22sp" />
+
+    <androidx.core.widget.NestedScrollView
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginBottom="32dp"
+        android:layout_weight="1">
+
         <TextView
-            android:id="@+id/tv_title"
+            android:id="@+id/tv_content"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:gravity="center"
             android:text="@string/oops"
-            android:textSize="22sp"
             android:textColor="?attr/colorControlNormal"
-            android:paddingVertical="16dp"/>
-        <androidx.core.widget.NestedScrollView
-            android:layout_width="match_parent"
-            android:layout_height="0dp"
-            android:layout_marginTop="16dp"
-            android:layout_marginBottom="32dp"
-            android:layout_weight="1">
-            <TextView
-                android:id="@+id/tv_content"
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:text="@string/oops"
-                android:textColor="?attr/colorControlNormal"
-                android:textColorLink="?attr/colorControlNormal"
-                android:textSize="14sp"/>
-        </androidx.core.widget.NestedScrollView>
-        <TextView
-            android:id="@+id/positiveButton"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:padding="16dp"
-            android:background="@drawable/dialog_shape_top_button"
-            android:layout_marginBottom="1dp"
-            android:gravity="center"
-            android:textColor="?attr/colorControlNormal"/>
+            android:textColorLink="?attr/colorControlNormal"
+            android:textSize="14sp" />
+    </androidx.core.widget.NestedScrollView>
 
-        <TextView
-            android:id="@+id/negativeButton"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:padding="16dp"
-            android:background="@drawable/dialog_shape_middle_button"
-            android:layout_marginVertical="1dp"
-            android:gravity="center"
-            android:textColor="?attr/colorControlNormal"/>
+    <TextView
+        android:id="@+id/positiveButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="1dp"
+        android:background="@drawable/dialog_shape_top_button"
+        android:gravity="center"
+        android:padding="16dp"
+        android:textColor="?attr/colorControlNormal" />
 
-        <TextView
-            android:id="@+id/neutralButton"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:padding="16dp"
-            android:background="@drawable/dialog_shape_bottom_button"
-            android:layout_marginTop="1dp"
-            android:gravity="center"
-            android:textColor="?attr/colorControlNormal"/>
-    </LinearLayout>
-</com.google.android.material.card.MaterialCardView>
+    <TextView
+        android:id="@+id/negativeButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginVertical="1dp"
+        android:background="@drawable/dialog_shape_middle_button"
+        android:gravity="center"
+        android:padding="16dp"
+        android:textColor="?attr/colorControlNormal" />
+
+    <TextView
+        android:id="@+id/neutralButton"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="1dp"
+        android:background="@drawable/dialog_shape_bottom_button"
+        android:gravity="center"
+        android:padding="16dp"
+        android:textColor="?attr/colorControlNormal" />
+</LinearLayout>
diff --git a/web/data/UpdateConfig.json b/web/data/UpdateConfig.json
index fd1fcff..55f2351 100644
--- a/web/data/UpdateConfig.json
+++ b/web/data/UpdateConfig.json
@@ -5,11 +5,11 @@
     "url": "https://github.com/xoureldeen/Vectras-VM-Android/releases",
     "Message": "<h2>3.7.0</h2>\nBugs fixed.",
     "cancellable": true,
-    "versionCodeBeta":"77",
-    "versionNameBeta":"3.7.3",
-    "versionNameBetas":"3.0.0,3.1.0,3.2.1,3.2.2,3.2.3,3.2.4,3.2.5,3.2.6,3.2.7,3.2.8,3.2.9,3.2.10,3.3.1,3.3.2,3.3.3,3.3.4,3.3.5,3.3.6,3.3.7,3.3.8,3.3.9,3.4.1,3.4.2,3.4.3,3.4.4,3.4.5,3.4.6,3.4.7,3.4.8,3.4.9,3.5.1,3.5.2,3.5.3,3.5.4,3.5.5,3.5.6,3.5.7,3.5.8,3.5.9,3.6.1,3.6.2,3.6.3,3.6.4,3.6.5,3.6.6,3.6.7,3.6.8,3.6.9,3.7.0,3.7.1,3.7.2,3.7.3",
+    "versionCodeBeta":"78",
+    "versionNameBeta":"3.7.4",
+    "versionNameBetas":"3.0.0,3.1.0,3.2.1,3.2.2,3.2.3,3.2.4,3.2.5,3.2.6,3.2.7,3.2.8,3.2.9,3.2.10,3.3.1,3.3.2,3.3.3,3.3.4,3.3.5,3.3.6,3.3.7,3.3.8,3.3.9,3.4.1,3.4.2,3.4.3,3.4.4,3.4.5,3.4.6,3.4.7,3.4.8,3.4.9,3.5.1,3.5.2,3.5.3,3.5.4,3.5.5,3.5.6,3.5.7,3.5.8,3.5.9,3.6.1,3.6.2,3.6.3,3.6.4,3.6.5,3.6.6,3.6.7,3.6.8,3.6.9,3.7.0,3.7.1,3.7.2,3.7.3,3.7.4",
     "sizeBeta": "45 MB",
     "urlBeta": "https://github.com/AnBui2004/Vectras-VM-Emu-Android/releases",
-    "MessageBeta": "<h2>3.7.3</h2>Bugs fixed.",
+    "MessageBeta": "<h2>3.7.4</h2>Bugs fixed.",
     "cancellableBeta": true
 }