diff --git a/BlocklyAtsGui/BlocklyAtsGui.csproj b/BlocklyAtsGui/BlocklyAtsGui.csproj
index 957908d..d559ce4 100644
--- a/BlocklyAtsGui/BlocklyAtsGui.csproj
+++ b/BlocklyAtsGui/BlocklyAtsGui.csproj
@@ -99,7 +99,6 @@
       <DependentUpon>FormBugReport.cs</DependentUpon>
     </Compile>
     <Compile Include="WebView\HttpServer.cs" />
-    <Compile Include="WebView\WebView2Browser.Reflection.cs" />
     <Compile Include="Workspace\CompilerFunction.cs" />
     <Compile Include="Workspace\BuildRunConfig.cs" />
     <Compile Include="WebView\ExternalBrowser.cs" />
@@ -196,19 +195,13 @@
   <PropertyGroup>
     <PostBuildEvent>XCOPY "$(SolutionDir)www" "$(TargetDir)\www\" /E /Y
 XCOPY "$(SolutionDir)assets" "$(TargetDir)\" /E /Y
-COPY /Y "$(TargetDir)\x86\WebView2Loader.dll" "$(TargetDir)\WebView2Loader.x86.dll"
-RMDIR /S /Q "$(TargetDir)\x86"
-COPY /Y "$(TargetDir)\x64\WebView2Loader.dll" "$(TargetDir)\WebView2Loader.x64.dll"
-RMDIR /S /Q "$(TargetDir)\x64"
-COPY /Y "$(TargetDir)\arm64\WebView2Loader.dll" "$(TargetDir)\WebView2Loader.arm64.dll"
-RMDIR /S /Q "$(TargetDir)\arm64"
 IF $(ConfigurationName)==Release (
 COPY /Y "$(SolutionDir)BatsWinApi\Release\batswinapi_x86.dll" "$(TargetDir)\lib"
 COPY /Y "$(SolutionDir)BatsWinApi\Release\batswinapi_x64.dll" "$(TargetDir)\lib"
 ERASE "$(TargetDir)\WebView2Loader.dll"
 RMDIR /S /Q "${TargetDir)\BlocklyATS.exe.WebView2"
-DEL "$(TargetDir)\*.xml"
-DEL "$(TargetDir)\*.zip"
+ERASE "$(TargetDir)\*.xml"
+ERASE "$(TargetDir)\*.zip"
 "C:\Program Files\7-zip\7z.exe" a BlocklyAts.zip .
 )</PostBuildEvent>
   </PropertyGroup>
diff --git a/BlocklyAtsGui/Program.cs b/BlocklyAtsGui/Program.cs
index 3bd9ce1..0fd9449 100644
--- a/BlocklyAtsGui/Program.cs
+++ b/BlocklyAtsGui/Program.cs
@@ -18,7 +18,12 @@ static void Main() {
             Application.SetCompatibleTextRenderingDefault(false);
             Application.Run(new FormMain());
 
-            PreferenceManager.SavePreference();
+            if (!PreferenceManager.SavePreference()) {
+                MessageBox.Show(
+                    I18n.TranslateAllLang("Msg.PreferenceWriteFail"), "Cannot Write Preference",
+                    MessageBoxButtons.OK, MessageBoxIcon.Error
+                );
+            }
         }
     }
 }
diff --git a/BlocklyAtsGui/Properties/AssemblyInfo.cs b/BlocklyAtsGui/Properties/AssemblyInfo.cs
index 27ed92c..73da3bd 100644
--- a/BlocklyAtsGui/Properties/AssemblyInfo.cs
+++ b/BlocklyAtsGui/Properties/AssemblyInfo.cs
@@ -32,4 +32,4 @@
 // 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
 // 方法是按如下所示使用“*”: :
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("1.0.5.101")]
+[assembly: AssemblyVersion("1.0.5.102")]
diff --git a/BlocklyAtsGui/System/PreferenceManager.cs b/BlocklyAtsGui/System/PreferenceManager.cs
index e1eafb4..cbb813c 100644
--- a/BlocklyAtsGui/System/PreferenceManager.cs
+++ b/BlocklyAtsGui/System/PreferenceManager.cs
@@ -11,6 +11,13 @@ static class PreferenceManager {
 
         public static Preference CurrentPreference;
 
+        public static string DataDirectory = Path.Combine(
+            Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
+            "zbx1425", "BlocklyAts"
+        );
+        public static string PreferencePath = Path.Combine(DataDirectory, "Preference.xml");
+        public static string WebView2UserDataPath = Path.Combine(DataDirectory, "WebView2UserData");
+
         public static bool FirstStartup = true;
 
         public static void ResetPreference() {
@@ -20,10 +27,15 @@ public static void ResetPreference() {
             };
         }
 
-        public static bool LoadPreference(string path = "Preference.xml") {
-            if (File.Exists(path)) {
+        public static bool LoadPreference() {
+            try {
+                if (!Directory.Exists(DataDirectory)) Directory.CreateDirectory(DataDirectory);
+            } catch {
+                return false;
+            }
+            if (File.Exists(PreferencePath)) {
                 try {
-                    CurrentPreference = Preference.LoadFromFile(path);
+                    CurrentPreference = Preference.LoadFromFile(PreferencePath);
                     FirstStartup = false;
                 } catch {
                     ResetPreference();
@@ -37,9 +49,10 @@ public static bool LoadPreference(string path = "Preference.xml") {
             }
         }
 
-        public static bool SavePreference(string path = "Preference.xml") {
+        public static bool SavePreference() {
             try {
-                CurrentPreference.SaveToFile(path);
+                if (!Directory.Exists(DataDirectory)) Directory.CreateDirectory(DataDirectory);
+                CurrentPreference.SaveToFile(PreferencePath);
             } catch {
                 return false;
             }
diff --git a/BlocklyAtsGui/UserInterface/FormAbout.Designer.cs b/BlocklyAtsGui/UserInterface/FormAbout.Designer.cs
index eef662e..7f00cd0 100644
--- a/BlocklyAtsGui/UserInterface/FormAbout.Designer.cs
+++ b/BlocklyAtsGui/UserInterface/FormAbout.Designer.cs
@@ -136,14 +136,14 @@ private void InitializeComponent() {
             // 
             this.linkLabel1.AutoSize = true;
             this.linkLabel1.Dock = System.Windows.Forms.DockStyle.Fill;
-            this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(21, 14);
+            this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(20, 14);
             this.linkLabel1.Location = new System.Drawing.Point(106, 58);
             this.linkLabel1.Margin = new System.Windows.Forms.Padding(6, 0, 3, 5);
             this.linkLabel1.Name = "linkLabel1";
             this.linkLabel1.Size = new System.Drawing.Size(357, 19);
             this.linkLabel1.TabIndex = 25;
             this.linkLabel1.TabStop = true;
-            this.linkLabel1.Text = "feedback@zbx1425.cn; www.zbx1425.cn";
+            this.linkLabel1.Text = "support@zbx1425.cn; www.zbx1425.cn";
             this.linkLabel1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
             this.linkLabel1.UseCompatibleTextRendering = true;
             this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked);
diff --git a/BlocklyAtsGui/UserInterface/FormBugReport.Designer.cs b/BlocklyAtsGui/UserInterface/FormBugReport.Designer.cs
index ea039d9..216182f 100644
--- a/BlocklyAtsGui/UserInterface/FormBugReport.Designer.cs
+++ b/BlocklyAtsGui/UserInterface/FormBugReport.Designer.cs
@@ -78,14 +78,14 @@ private void InitializeComponent() {
             // llbEmail
             // 
             this.llbEmail.AutoSize = true;
-            this.llbEmail.LinkArea = new System.Windows.Forms.LinkArea(0, 19);
+            this.llbEmail.LinkArea = new System.Windows.Forms.LinkArea(0, 18);
             this.llbEmail.Location = new System.Drawing.Point(94, 158);
             this.llbEmail.Margin = new System.Windows.Forms.Padding(10);
             this.llbEmail.Name = "llbEmail";
-            this.llbEmail.Size = new System.Drawing.Size(270, 24);
+            this.llbEmail.Size = new System.Drawing.Size(261, 24);
             this.llbEmail.TabIndex = 7;
             this.llbEmail.TabStop = true;
-            this.llbEmail.Text = "feedback@zbx1425.cn (As of 2021)";
+            this.llbEmail.Text = "support@zbx1425.cn (As of 2021)";
             this.llbEmail.UseCompatibleTextRendering = true;
             this.llbEmail.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.llbEmail_LinkClicked);
             // 
diff --git a/BlocklyAtsGui/UserInterface/FormBugReport.cs b/BlocklyAtsGui/UserInterface/FormBugReport.cs
index e5a5624..78eeefc 100644
--- a/BlocklyAtsGui/UserInterface/FormBugReport.cs
+++ b/BlocklyAtsGui/UserInterface/FormBugReport.cs
@@ -27,7 +27,7 @@ private void llbTwitter_LinkClicked(object sender, LinkLabelLinkClickedEventArgs
         }
 
         private void llbEmail_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) {
-            PlatformFunction.CallBrowser("mailto:feedback@zbx1425.cn?subject=BlocklyAts%20Bug%20Report");
+            PlatformFunction.CallBrowser("mailto:support@zbx1425.cn?subject=BlocklyAts%20Bug%20Report");
         }
 
         private void FormBugReport_Load(object sender, EventArgs e) {
diff --git a/BlocklyAtsGui/UserInterface/FormMain.cs b/BlocklyAtsGui/UserInterface/FormMain.cs
index c78bc8b..5d7da2a 100644
--- a/BlocklyAtsGui/UserInterface/FormMain.cs
+++ b/BlocklyAtsGui/UserInterface/FormMain.cs
@@ -168,12 +168,8 @@ private async void tsbtnSaveAs_Click(object sender, EventArgs e) {
                 Title = "Save Workspace"
             };
             if (sfd.ShowDialog() != DialogResult.OK) return;
-
-            var workspaceState = await mainWebBrowser.BkySaveWorkspace();
-            if (workspaceState == null) return;
-            currentWorkspace.BlocklyXml = new FPXElement(workspaceState);
-            currentWorkspace.SaveToFile(sfd.FileName);
-            updateSaveFileState();
+            
+            await saveWorkspace(sfd.FileName);
         }
 
         private async void tsbtnOpen_Click(object sender, EventArgs e) {
@@ -192,7 +188,18 @@ private async void tsbtnOpen_Click(object sender, EventArgs e) {
             }
         }
 
+        private async Task saveWorkspace(string path = null) {
+            if (path == null && string.IsNullOrEmpty(currentWorkspace.SaveFilePath)) return;
+            var workspaceState = await mainWebBrowser.BkySaveWorkspace();
+            if (workspaceState == null) return;
+            currentWorkspace.BlocklyXml = new FPXElement(workspaceState);
+            currentWorkspace.SaveToFile(path);
+            updateSaveFileState();
+        }
+
         private async Task<string> buildAllPlatforms() {
+            await saveWorkspace(); // Autosave
+
             var luaCode = await mainWebBrowser.BkyExportLua();
             var outputList = new List<Tuple<string, string>>();
             if (currentWorkspace.Config.ShouldCompilex86) {
@@ -241,11 +248,7 @@ private async void tsbtnCompile_Click(object sender, EventArgs e) {
         }
 
         private async void tsbtnSave_Click(object sender, EventArgs e) {
-            if (string.IsNullOrEmpty(currentWorkspace.SaveFilePath)) return;
-            var workspaceState = await mainWebBrowser.BkySaveWorkspace();
-            if (workspaceState == null) return;
-            currentWorkspace.BlocklyXml = new FPXElement(workspaceState);
-            currentWorkspace.SaveToFile();
+            await saveWorkspace();
         }
 
         private async void tsbtnCompileRun_Click(object sender, EventArgs e) {
diff --git a/BlocklyAtsGui/WebView/HttpServer.cs b/BlocklyAtsGui/WebView/HttpServer.cs
index c83e975..3f3d068 100644
--- a/BlocklyAtsGui/WebView/HttpServer.cs
+++ b/BlocklyAtsGui/WebView/HttpServer.cs
@@ -117,7 +117,7 @@ private async Task HandleIncomingConnections(CancellationToken cancelToken) {
                     resp.StatusCode = 404;
                     string errorMessageTemplate = @"
 <h2>Error: 404 Not Found</h2>
-<p>Please inform developer with these information: <a href='mailto:zbx1425@outlook.com'>zbx1425@outlook.com</a></p>
+<p>Please inform developer with these information.
 <hr/>
 <table>
     <tr><th>Missing Path</th><td>{0}</td></tr>
diff --git a/BlocklyAtsGui/WebView/WebView2Browser.Reflection.cs b/BlocklyAtsGui/WebView/WebView2Browser.Reflection.cs
deleted file mode 100644
index 19e7ac6..0000000
--- a/BlocklyAtsGui/WebView/WebView2Browser.Reflection.cs
+++ /dev/null
@@ -1,55 +0,0 @@
-using Microsoft.Web.WebView2.Core;
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Reflection;
-using System.Runtime.InteropServices;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace BlocklyAts {
-    partial class WebView2Browser {
-
-        [DllImport("kernel32.dll", SetLastError = true)]
-        private static extern IntPtr LoadLibrary(string dllToLoad);
-
-        private static void TryLoadWebview2Loader() {
-            var FLoaderLoaded = typeof(CoreWebView2Environment)
-                .GetField("webView2LoaderLoaded", BindingFlags.Static | BindingFlags.NonPublic);
-            if (!(bool)FLoaderLoaded.GetValue(null)) {
-                string frameworkDescription = RuntimeInformation.FrameworkDescription;
-                if (frameworkDescription.StartsWith(".NET Framework")) {
-                    string localPath = new Uri(typeof(CoreWebView2Environment).Assembly.CodeBase).LocalPath;
-                    string directoryName = Path.GetDirectoryName(localPath);
-                    string arch;
-                    switch (RuntimeInformation.ProcessArchitecture) {
-                        case Architecture.X86:
-                            arch = "x86";
-                            break;
-                        case Architecture.X64:
-                            arch = "x64";
-                            break;
-                        case Architecture.Arm64:
-                            arch = "arm64";
-                            break;
-                        default:
-                            throw new NotSupportedException(
-                                string.Format("{0} bit WebView2Loader.dll is not supported", RuntimeInformation.ProcessArchitecture)
-                            );
-                    }
-                    string dllName = "WebView2Loader." + arch + ".dll";
-                    if (File.Exists(dllName)) {
-                        File.Copy(dllName, "WebView2Loader.dll", true);
-                        if (LoadLibrary("WebView2Loader.dll") == IntPtr.Zero) {
-                            int hrforLastWin32Error = Marshal.GetHRForLastWin32Error();
-                            Marshal.ThrowExceptionForHR(hrforLastWin32Error);
-                        } else {
-                            FLoaderLoaded.SetValue(null, true);
-                        }
-                    }
-                }
-            }
-        }
-    }
-}
diff --git a/BlocklyAtsGui/WebView/WebView2Browser.cs b/BlocklyAtsGui/WebView/WebView2Browser.cs
index 5341003..4803dc7 100644
--- a/BlocklyAtsGui/WebView/WebView2Browser.cs
+++ b/BlocklyAtsGui/WebView/WebView2Browser.cs
@@ -18,14 +18,10 @@ partial class WebView2Browser : BaseBrowser {
         private WebView2 browser;
 
         public WebView2Browser(string url = "about:blank") {
-            // Use an alternative path for WebView2 Loader, for a better appearance
-            // Might remove it if it causes troubles
-            TryLoadWebview2Loader();
-
             browser = new WebView2();
             browser.NavigationCompleted += Browser_DocumentCompleted;
 
-            var createTask = CoreWebView2Environment.CreateAsync();
+            var createTask = CoreWebView2Environment.CreateAsync(null, PreferenceManager.WebView2UserDataPath, null);
             createTask.Wait();
             environment = createTask.Result;
             browser.CoreWebView2Ready += (sender, e) => {
@@ -86,7 +82,7 @@ private void CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebRes
             } else {
                 string errorMessageTemplate = @"
 <h2>Error: 404 Not Found</h2>
-<p>Please inform developer with these information: <a href='mailto:zbx1425@outlook.com'>zbx1425@outlook.com</a></p>
+<p>Please inform developer with these information.</p>
 <hr/>
 <table>
     <tr><th>Missing Path</th><td>{0}</td></tr>