diff --git a/CollapseLauncher/Classes/Helper/Metadata/PresetConfig.cs b/CollapseLauncher/Classes/Helper/Metadata/PresetConfig.cs
index a5f3f12a4..a3f93b05a 100644
--- a/CollapseLauncher/Classes/Helper/Metadata/PresetConfig.cs
+++ b/CollapseLauncher/Classes/Helper/Metadata/PresetConfig.cs
@@ -559,7 +559,7 @@ public bool TryCheckGameLocationHYP()
                 if (subKey == null) continue;
 
                 string[] subKeyKey = subKey.GetSubKeyNames();
-                if (subKeyKey?.Length == 0) continue;
+                if (subKeyKey.Length == 0) continue;
 
                 string? gameKeyName = subKeyKey?.FirstOrDefault(x => x.Equals(LauncherBizName, StringComparison.OrdinalIgnoreCase));
                 if (string.IsNullOrEmpty(gameKeyName)) continue;
diff --git a/CollapseLauncher/Classes/Interfaces/Class/CommunityToolsProperty.cs b/CollapseLauncher/Classes/Interfaces/Class/CommunityToolsProperty.cs
index a76a950ac..355c39ddd 100644
--- a/CollapseLauncher/Classes/Interfaces/Class/CommunityToolsProperty.cs
+++ b/CollapseLauncher/Classes/Interfaces/Class/CommunityToolsProperty.cs
@@ -1,6 +1,5 @@
 using CollapseLauncher.Helper.Metadata;
 using Hi3Helper;
-using Hi3Helper.Shared.Region;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
diff --git a/CollapseLauncher/Classes/Interfaces/Class/Structs.cs b/CollapseLauncher/Classes/Interfaces/Class/Structs.cs
index 840ca50ac..d2e0fb00a 100644
--- a/CollapseLauncher/Classes/Interfaces/Class/Structs.cs
+++ b/CollapseLauncher/Classes/Interfaces/Class/Structs.cs
@@ -3,6 +3,7 @@
 using Hi3Helper.Http;
 using System;
 using System.IO;
+// ReSharper disable CheckNamespace
 
 namespace CollapseLauncher
 {
@@ -171,7 +172,7 @@ public bool IsMatch(string versionToCompare)
         public bool IsMatch(GameVersion? versionToCompare)
         {
             if (versionToCompare == null) return false;
-            return Major == versionToCompare?.Major && Minor == versionToCompare?.Minor && Build == versionToCompare?.Build && Revision == versionToCompare?.Revision;
+            return Major == versionToCompare.Value.Major && Minor == versionToCompare.Value.Minor && Build == versionToCompare.Value.Build && Revision == versionToCompare.Value.Revision;
         }
 
         public GameVersion GetIncrementedVersion()
@@ -186,7 +187,7 @@ public GameVersion GetIncrementedVersion()
                 NextMajor++;
             }
 
-            return new GameVersion(new int[] { NextMajor, NextMinor, Build, Revision });
+            return new GameVersion(new[] { NextMajor, NextMinor, Build, Revision });
         }
 
         public Version ToVersion() => new Version(Major, Minor, Build, Revision);
diff --git a/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs b/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
index 425d874ca..02c1dcb7f 100644
--- a/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/MainPage.xaml.cs
@@ -10,12 +10,10 @@
 using CollapseLauncher.Helper.Update;
 using CollapseLauncher.Interfaces;
 using CollapseLauncher.Pages;
-using CollapseLauncher.Statics;
 using CommunityToolkit.WinUI;
 using CommunityToolkit.WinUI.Animations;
 using Hi3Helper;
 using Hi3Helper.Shared.ClassStruct;
-using Hi3Helper.Shared.Region;
 using InnoSetupHelper;
 using Microsoft.UI;
 using Microsoft.UI.Input;
diff --git a/CollapseLauncher/XAMLs/MainApp/Pages/Dialogs/InstallationConvert.xaml.cs b/CollapseLauncher/XAMLs/MainApp/Pages/Dialogs/InstallationConvert.xaml.cs
index 6147d72ff..bf575be0d 100644
--- a/CollapseLauncher/XAMLs/MainApp/Pages/Dialogs/InstallationConvert.xaml.cs
+++ b/CollapseLauncher/XAMLs/MainApp/Pages/Dialogs/InstallationConvert.xaml.cs
@@ -177,7 +177,7 @@ private async Task<string> FetchDataIntegrityURL(PresetConfig Profile)
 
             GameVersion = _Entry.data.game.latest.version;
 
-            return _RepoList[GameVersion];
+            return _RepoList[GameVersion ?? throw new InvalidOperationException()];
         }
 
         internal bool IsSourceGameExist(PresetConfig Profile)