diff --git a/GoAwayEdge/App.xaml.cs b/GoAwayEdge/App.xaml.cs
index 561283b..b473f96 100644
--- a/GoAwayEdge/App.xaml.cs
+++ b/GoAwayEdge/App.xaml.cs
@@ -62,7 +62,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
             Updater.InitialEnvironment();
 
 #if DEBUG
-            var w = new MessageUI("GoAwayEdge",
+            var w = new MessageUi("GoAwayEdge",
                 $"The following args are redirected (CTRL+C to copy):\n\n{argumentJoin}", "OK", null, true);
             w.ShowDialog();
 #endif
@@ -90,7 +90,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
                         case 1: // failed validation
                             if (IsAdministrator() == false)
                             {
-                                var ifeoMessageUi = new MessageUI("GoAwayEdge",
+                                var ifeoMessageUi = new MessageUi("GoAwayEdge",
                                     "The IFEO exclusion file needs to be updated. Update now?", "No", "Yes");
                                 ifeoMessageUi.ShowDialog();
                                 
@@ -118,7 +118,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
                         case 2: // missing
                             if (IsAdministrator() == false)
                             {
-                                var ifeoMessageUi = new MessageUI("GoAwayEdge",
+                                var ifeoMessageUi = new MessageUi("GoAwayEdge",
                                         "The IFEO exclusion file is missing and need to be copied. Copy now?", "No", "Yes");
                                 ifeoMessageUi.ShowDialog();
 
@@ -170,7 +170,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
                 if (!args.Contains("--profile-directory") && !ContainsParsedData(args) && args.Length != 2) continue; // Start Edge (default browser on this system)
 
 #if DEBUG
-                var messageUi = new MessageUI("GoAwayEdge",
+                var messageUi = new MessageUi("GoAwayEdge",
                     $"Microsoft Edge will now start normally via IFEO application.", "OK", null, true);
                 messageUi.ShowDialog();
 #endif
@@ -198,7 +198,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
                     p.StartInfo.Arguments = "microsoft-edge://?ux=copilot&tcp=1&source=taskbar";
                     Output.WriteLine("Opening Windows Copilot", ConsoleColor.Gray);
 #if DEBUG
-                    var copilotMessageUi = new MessageUI("GoAwayEdge",
+                    var copilotMessageUi = new MessageUi("GoAwayEdge",
                         "Opening Windows Copilot ...", "OK", null, true);
                     copilotMessageUi.ShowDialog();
 #endif
@@ -208,7 +208,7 @@ public void Application_Startup(object sender, StartupEventArgs e)
                     var parsed = ParseUrl(_url);
                     Output.WriteLine("Opening URL in default browser:\n\n" + parsed + "\n", ConsoleColor.Gray);
 #if DEBUG
-                    var defaultUrlMessageUi = new MessageUI("GoAwayEdge",
+                    var defaultUrlMessageUi = new MessageUi("GoAwayEdge",
                         "Opening URL in default browser:\n\n" + parsed + "\n", "OK", null, true);
                     defaultUrlMessageUi.ShowDialog();
 #endif
@@ -259,7 +259,7 @@ private static string ParseUrl(string encodedUrl)
             encodedUrl = encodedUrl.Replace("https://www.bing.com/search?q=", DefineEngine(_engine));
 
 #if DEBUG
-            var uriMessageUi = new MessageUI("GoAwayEdge",
+            var uriMessageUi = new MessageUi("GoAwayEdge",
                 "New Uri: " + encodedUrl, "OK", null, true);
             uriMessageUi.ShowDialog();
 #endif
diff --git a/GoAwayEdge/Common/Updater.cs b/GoAwayEdge/Common/Updater.cs
index e00e60d..4e7e922 100644
--- a/GoAwayEdge/Common/Updater.cs
+++ b/GoAwayEdge/Common/Updater.cs
@@ -39,7 +39,7 @@ public static bool InitialEnvironment()
             }
             catch (Exception ex)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
+                var messageUi = new MessageUi("GoAwayEdge",
                     $"Initialization failed!\n{ex.Message}", "OK", null, true);
                 messageUi.ShowDialog();
                 return false;
@@ -81,7 +81,7 @@ public static int ValidateIfeoBinary()
                 var ifeoHash = CalculateMd5(ifeoBinaryPath);
 #if DEBUG
                 if (edgeHash != ifeoHash) {
-                    var messageUi = new MessageUI("GoAwayEdge",
+                    var messageUi = new MessageUi("GoAwayEdge",
                         $"The Edge Hash ({edgeHash}) and Ifeo Hash ({ifeoHash}) are not identical. Validation failed!", "OK", null,true);
                     messageUi.ShowDialog();
                 }
@@ -113,7 +113,7 @@ public static void ModifyIfeoBinary(ModifyAction action)
                     }
                     catch (Exception ex)
                     {
-                        var messageUi = new MessageUI("GoAwayEdge",
+                        var messageUi = new MessageUi("GoAwayEdge",
                             $"Update failed!\n{ex.Message}!", "OK", null, true);
                         messageUi.ShowDialog();
                     }
diff --git a/GoAwayEdge/GoAwayEdge.csproj b/GoAwayEdge/GoAwayEdge.csproj
index c450032..629a34e 100644
--- a/GoAwayEdge/GoAwayEdge.csproj
+++ b/GoAwayEdge/GoAwayEdge.csproj
@@ -13,7 +13,7 @@
 		<AssemblyName>GoAwayEdge</AssemblyName>
 		<Company>Exploitox</Company>
 		<Authors>valnoxy</Authors>
-		<Version>1.1.1.42</Version>
+		<Version>1.2.0.62</Version>
 		<Copyright>Copyright (c) 2018 - 2023 Exploitox. All rights reserved.</Copyright>
 		<PackageProjectUrl>https://github.com/valnoxy/GoAwayEdge</PackageProjectUrl>
 		<RepositoryUrl>https://github.com/valnoxy/GoAwayEdge</RepositoryUrl>
diff --git a/GoAwayEdge/GoAwayEdge.csproj.user b/GoAwayEdge/GoAwayEdge.csproj.user
index d04c88f..0fe83d1 100644
--- a/GoAwayEdge/GoAwayEdge.csproj.user
+++ b/GoAwayEdge/GoAwayEdge.csproj.user
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="Current" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
-    <_LastSelectedProfileId>C:\Users\jonas\source\repos\GoAwayEdge\GoAwayEdge\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
+    <_LastSelectedProfileId>C:\Users\jonas\Documents\Git\GoAwayEdge\GoAwayEdge\Properties\PublishProfiles\FolderProfile.pubxml</_LastSelectedProfileId>
   </PropertyGroup>
   <ItemGroup>
     <Compile Update="App.xaml.cs">
diff --git a/GoAwayEdge/Installer.xaml.cs b/GoAwayEdge/Installer.xaml.cs
index caa648c..78f7380 100644
--- a/GoAwayEdge/Installer.xaml.cs
+++ b/GoAwayEdge/Installer.xaml.cs
@@ -1,6 +1,7 @@
 using System.Diagnostics;
 using System.Reflection;
 using System.Windows;
+using GoAwayEdge.Common;
 using GoAwayEdge.Pages;
 
 namespace GoAwayEdge
@@ -13,7 +14,7 @@ public partial class Installer
         internal static Installer? ContentWindow;
         private static License? _licensePage;
         private static Settings? _settingPage;
-        
+
         public Installer()
         {
             InitializeComponent();
@@ -39,9 +40,10 @@ public Installer()
             }
             catch (Exception ex)
             {
-                // TODO: Implement message box
-                // Failed to load language: {ex.Message}
-                return;
+                var messageUi = new MessageUi("GoAwayEdge",
+                    $"Failed to load language: {ex.Message}", "OK", null, true);
+                messageUi.ShowDialog();
+                Environment.Exit(1);
             }
             
             _licensePage = new License();
diff --git a/GoAwayEdge/MessageUI.xaml b/GoAwayEdge/MessageUI.xaml
index 4020090..7ea1a74 100644
--- a/GoAwayEdge/MessageUI.xaml
+++ b/GoAwayEdge/MessageUI.xaml
@@ -1,4 +1,4 @@
-<ui:UiWindow x:Class="GoAwayEdge.MessageUI"
+<ui:UiWindow x:Class="GoAwayEdge.MessageUi"
              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
diff --git a/GoAwayEdge/MessageUI.xaml.cs b/GoAwayEdge/MessageUI.xaml.cs
index dd71181..838b7c6 100644
--- a/GoAwayEdge/MessageUI.xaml.cs
+++ b/GoAwayEdge/MessageUI.xaml.cs
@@ -1,9 +1,6 @@
 // Copyright (c) 2023 valnoxy
 // Copied from Dive: https://github.com/valnoxy/Dive/blob/main/Dive/Dive.UI/MessageUI.xaml.cs
 
-using System;
-using System.Threading;
-using System.Timers;
 using System.Windows;
 using System.Windows.Input;
 using System.Windows.Threading;
@@ -13,15 +10,15 @@ namespace GoAwayEdge
     /// <summary>
     /// Interaktionslogik für MessageUI.xaml
     /// </summary>
-    public partial class MessageUI
+    public partial class MessageUi
     {
         public virtual string? Summary => _buttonPressed;
 
         private static string? _buttonPressed;
         private static bool _mainThread;
-        private readonly DispatcherTimer _timer;
+        private readonly DispatcherTimer _timer = null!;
 
-        public MessageUI(string title, string message, string? btn1 = null, string? btn2 = null, bool isMainThread = false, int timer = 0)
+        public MessageUi(string title, string message, string? btn1 = null, string? btn2 = null, bool isMainThread = false, int timer = 0)
         {
             InitializeComponent();
 
@@ -41,10 +38,10 @@ public MessageUI(string title, string message, string? btn1 = null, string? btn2
 
                 _timer = new DispatcherTimer(new TimeSpan(0, 0, 1), DispatcherPriority.Normal, delegate
                 {
-                    LbTimer.Text = $"{time.ToString("%s")}s before auto-selecting '{this.Btn2.Content}'.";
+                    LbTimer.Text = $"{time:%s}s before auto-selecting '{this.Btn2.Content}'.";
                     if (time == TimeSpan.Zero)
                     {
-                        _timer?.Stop();
+                        _timer.Stop();
                         _buttonPressed = "Btn2";
                         if (_mainThread) this.Hide();
                         else this.Close();
diff --git a/GoAwayEdge/Pages/Installation.xaml.cs b/GoAwayEdge/Pages/Installation.xaml.cs
index 524915e..c7adfaa 100644
--- a/GoAwayEdge/Pages/Installation.xaml.cs
+++ b/GoAwayEdge/Pages/Installation.xaml.cs
@@ -49,9 +49,7 @@ private static void Install(object? sender, DoWorkEventArgs e)
             var status = CopyItself(Path.Combine(instDir, "GoAwayEdge.exe"), Path.GetDirectoryName(Process.GetCurrentProcess().MainModule?.FileName) != instDir);
             if (status == false)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    "Installation failed! Please try again.", "OK", null, true);
-                messageUi.ShowDialog();
+                MessageBox.Show("Installation failed! Please try again.", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -104,9 +102,7 @@ private static void Install(object? sender, DoWorkEventArgs e)
             }
             catch (Exception ex)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Installation failed!\n{ex.Message}", "OK", null, true);
-                messageUi.ShowDialog();
+                MessageBox.Show($"Installation failed!\n{ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -118,9 +114,7 @@ private static void Install(object? sender, DoWorkEventArgs e)
             }
             catch (Exception ex)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Installation failed!\n{ex.Message}", "OK", null, true);
-                messageUi.ShowDialog(); 
+                MessageBox.Show($"Installation failed!\n{ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -137,9 +131,7 @@ private static void Install(object? sender, DoWorkEventArgs e)
             }
             catch (Exception ex)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Installation failed!\n{ex.Message}", "OK", null, true);
-                messageUi.ShowDialog();
+                MessageBox.Show($"Installation failed!\n{ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -166,9 +158,7 @@ private static void Uninstall(object? sender, DoWorkEventArgs e)
             }
             catch (Exception ex) 
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Uninstallation failed! Please try again.\n{ex.Message}", "OK", null, true);
-                messageUi.ShowDialog(); 
+                MessageBox.Show($"Uninstallation failed! Please try again.\n{ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -182,9 +172,7 @@ private static void Uninstall(object? sender, DoWorkEventArgs e)
             }
             catch (Exception ex)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Uninstallation failed! Please try again.\n{ex.Message}", "OK", null, true);
-                messageUi.ShowDialog(); 
+                MessageBox.Show($"Uninstallation failed! Please try again.\n{ex.Message}", "Error", MessageBoxButton.OK, MessageBoxImage.Error);
                 Environment.Exit(1);
                 return;
             }
@@ -225,11 +213,9 @@ public static bool CopyItself(string pathTo, bool overwrite = false)
                 }
             }
 
-            catch (Exception ex)
+            catch (Exception e)
             {
-                var messageUi = new MessageUI("GoAwayEdge",
-                    $"Copy failed: {ex.Message}", "OK", null, true);
-                messageUi.ShowDialog(); 
+                MessageBox.Show(e.ToString());
                 return false;
             }
 
diff --git a/GoAwayEdge/Pages/Settings.xaml.cs b/GoAwayEdge/Pages/Settings.xaml.cs
index 44abab3..01ed995 100644
--- a/GoAwayEdge/Pages/Settings.xaml.cs
+++ b/GoAwayEdge/Pages/Settings.xaml.cs
@@ -83,38 +83,48 @@ private void SearchEngineBox_OnSelectionChanged(object sender, SelectionChangedE
                 case 0:
                     Configuration.Search = SearchEngine.Google;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 1:
                     Configuration.Search = SearchEngine.Bing;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 2:
                     Configuration.Search = SearchEngine.DuckDuckGo;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 3:
                     Configuration.Search = SearchEngine.Yahoo;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 4:
                     Configuration.Search = SearchEngine.Yandex;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 5:
                     Configuration.Search = SearchEngine.Ecosia;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 6:
                     Configuration.Search = SearchEngine.Ask;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 7:
                     Configuration.Search = SearchEngine.Qwant;
                     CustomSearchPanel.Visibility = Visibility.Collapsed;
+                    Installer.ContentWindow!.NextBtn.IsEnabled = true;
                     break;
                 case 8:
                     Configuration.Search = SearchEngine.Custom;
                     CustomSearchPanel.Visibility = Visibility.Visible;
+                    if (string.IsNullOrEmpty(Configuration.CustomQueryUrl))
+                        Installer.ContentWindow!.NextBtn.IsEnabled = false;
                     break;
             }
         }
@@ -137,6 +147,8 @@ private void UninstallSwitch_OnClick(object sender, RoutedEventArgs e)
         private void QueryUrlTextBox_OnTextChanged(object sender, TextChangedEventArgs e)
         {
             Configuration.CustomQueryUrl = QueryUrlTextBox.Text;
+            Installer.ContentWindow!.NextBtn.IsEnabled = Uri.TryCreate(QueryUrlTextBox.Text, UriKind.Absolute, out var uriResult)
+                                                         && (uriResult.Scheme == Uri.UriSchemeHttp || uriResult.Scheme == Uri.UriSchemeHttps);
         }
     }
 }
diff --git a/GoAwayEdge/Properties/PublishProfiles/FolderProfile.pubxml.user b/GoAwayEdge/Properties/PublishProfiles/FolderProfile.pubxml.user
index e54ffb3..0096ac4 100644
--- a/GoAwayEdge/Properties/PublishProfiles/FolderProfile.pubxml.user
+++ b/GoAwayEdge/Properties/PublishProfiles/FolderProfile.pubxml.user
@@ -4,7 +4,7 @@ https://go.microsoft.com/fwlink/?LinkID=208121.
 -->
 <Project>
   <PropertyGroup>
-    <History>True|2022-11-13T01:33:03.7406004Z;True|2022-11-13T02:19:07.9073988+01:00;True|2022-11-13T02:18:35.3043045+01:00;True|2022-11-12T20:05:07.6366825+01:00;False|2022-11-12T20:04:52.3576134+01:00;True|2022-11-12T19:36:12.8480978+01:00;</History>
+    <History>True|2023-10-18T22:00:28.0962969Z;True|2022-11-13T02:33:03.7406004+01:00;True|2022-11-13T02:19:07.9073988+01:00;True|2022-11-13T02:18:35.3043045+01:00;True|2022-11-12T20:05:07.6366825+01:00;False|2022-11-12T20:04:52.3576134+01:00;True|2022-11-12T19:36:12.8480978+01:00;</History>
     <LastFailureDetails />
   </PropertyGroup>
 </Project>
\ No newline at end of file