diff --git a/CreamInstaller/Components/CustomTreeView.cs b/CreamInstaller/Components/CustomTreeView.cs
index 28a037b..bec04e8 100644
--- a/CreamInstaller/Components/CustomTreeView.cs
+++ b/CreamInstaller/Components/CustomTreeView.cs
@@ -4,6 +4,7 @@ using CreamInstaller.Utility;
 using System;
 using System.Collections.Generic;
 using System.Drawing;
+using System.IO;
 using System.Linq;
 using System.Windows.Forms;
 using System.Windows.Forms.VisualStyles;
@@ -223,13 +224,24 @@ internal class CustomTreeView : TreeView
                         comboBoxDropDown.Items.Clear();
                         foreach (string proxy in proxies)
                         {
-                            _ = comboBoxDropDown.Items.Add(new ToolStripButton(proxy + ".dll", null, (s, e) =>
+                            bool canUse = true;
+                            foreach ((string directory, BinaryType binaryType) in pair.Key.ExecutableDirectories)
                             {
-                                pair.Key.KoaloaderProxy = proxy;
-                                ProgramData.UpdateKoaloaderProxyChoices();
-                                Invalidate();
-                            })
-                            { Font = comboBoxFont });
+                                string path = directory + @"\" + proxy + ".dll";
+                                if (File.Exists(path) && !path.IsResourceFile(ResourceIdentifier.Koaloader))
+                                {
+                                    canUse = false;
+                                    break;
+                                }
+                            }
+                            if (canUse)
+                                _ = comboBoxDropDown.Items.Add(new ToolStripButton(proxy + ".dll", null, (s, e) =>
+                                {
+                                    pair.Key.KoaloaderProxy = proxy;
+                                    ProgramData.UpdateKoaloaderProxyChoices();
+                                    Invalidate();
+                                })
+                                { Font = comboBoxFont });
                         }
                         comboBoxDropDown.Show(this, PointToScreen(new(pair.Value.Left, pair.Value.Bottom - 1)));
                         invalidate = true;
diff --git a/CreamInstaller/CreamInstaller.csproj b/CreamInstaller/CreamInstaller.csproj
index 97dc9f3..881fb7b 100644
--- a/CreamInstaller/CreamInstaller.csproj
+++ b/CreamInstaller/CreamInstaller.csproj
@@ -5,7 +5,7 @@
 		<UseWindowsForms>True</UseWindowsForms>
 		<ApplicationIcon>Resources\ini.ico</ApplicationIcon>
 		<IncludeAllContentForSelfExtract>true</IncludeAllContentForSelfExtract>
-		<Version>4.1.2.0</Version>
+		<Version>4.1.3.0</Version>
 		<PackageIcon>Resources\ini.ico</PackageIcon>
 		<PackageLicenseFile>LICENSE</PackageLicenseFile>
 		<Copyright>2021, pointfeev (https://github.com/pointfeev)</Copyright>
@@ -25,6 +25,8 @@
 		<SignAssembly>False</SignAssembly>
 		<EnforceCodeStyleInBuild>True</EnforceCodeStyleInBuild>
 		<AnalysisLevel>latest-all</AnalysisLevel>
+		<Title>CreamInstaller</Title>
+		<Description>Automatic DLC Unlocker Installer &amp; Configuration Generator</Description>
 	</PropertyGroup>
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
 		<DebugType>embedded</DebugType>
diff --git a/CreamInstaller/Forms/InstallForm.cs b/CreamInstaller/Forms/InstallForm.cs
index e746fff..fd6d48f 100644
--- a/CreamInstaller/Forms/InstallForm.cs
+++ b/CreamInstaller/Forms/InstallForm.cs
@@ -175,12 +175,13 @@ internal partial class InstallForm : CustomForm
         UpdateProgress(100);
     }
 
+    private readonly List<ProgramSelection> DisabledSelections = new();
+
     private async Task Operate()
     {
         List<ProgramSelection> programSelections = ProgramSelection.AllEnabled;
         OperationsCount = programSelections.Count;
         CompleteOperationsCount = 0;
-        List<ProgramSelection> disabledSelections = new();
         foreach (ProgramSelection selection in programSelections)
         {
             if (Program.Canceled || !Program.IsProgramRunningDialog(this, selection)) throw new CustomMessageException("The operation was canceled.");
@@ -189,7 +190,7 @@ internal partial class InstallForm : CustomForm
                 await OperateFor(selection);
                 UpdateUser($"Operation succeeded for {selection.Name}.", InstallationLog.Success);
                 selection.Enabled = false;
-                disabledSelections.Add(selection);
+                DisabledSelections.Add(selection);
             }
             catch (Exception exception)
             {
@@ -200,9 +201,13 @@ internal partial class InstallForm : CustomForm
         Program.Cleanup();
         List<ProgramSelection> FailedSelections = ProgramSelection.AllEnabled;
         if (FailedSelections.Any())
-            if (FailedSelections.Count == 1) throw new CustomMessageException($"Operation failed for {FailedSelections.First().Name}.");
-            else throw new CustomMessageException($"Operation failed for {FailedSelections.Count} programs.");
-        foreach (ProgramSelection selection in disabledSelections) selection.Enabled = true;
+            if (FailedSelections.Count == 1)
+                throw new CustomMessageException($"Operation failed for {FailedSelections.First().Name}.");
+            else
+                throw new CustomMessageException($"Operation failed for {FailedSelections.Count} programs.");
+        foreach (ProgramSelection selection in DisabledSelections)
+            selection.Enabled = true;
+        DisabledSelections.Clear();
     }
 
     private readonly int ProgramCount = ProgramSelection.AllEnabled.Count;
@@ -265,6 +270,9 @@ internal partial class InstallForm : CustomForm
     {
         Program.Cleanup();
         Reselecting = true;
+        foreach (ProgramSelection selection in DisabledSelections)
+            selection.Enabled = true;
+        DisabledSelections.Clear();
         Close();
     }
 }
diff --git a/CreamInstaller/Resources/Koaloader.cs b/CreamInstaller/Resources/Koaloader.cs
index 8087d9e..3b8aa7e 100644
--- a/CreamInstaller/Resources/Koaloader.cs
+++ b/CreamInstaller/Resources/Koaloader.cs
@@ -164,6 +164,8 @@ internal static class Koaloader
             if (installForm is not null)
                 installForm.UpdateUser($"Deleted Koaloader: {Path.GetFileName(_path)}", InstallationLog.Action, info: false);
         }
+        if (File.Exists(path) && !path.IsResourceFile(ResourceIdentifier.Koaloader))
+            throw new CustomMessageException("A non-Koaloader DLL named " + selection.KoaloaderProxy + ".dll already exists in this directory!");
         path.WriteProxy(selection.KoaloaderProxy, binaryType);
         if (installForm is not null)
             installForm.UpdateUser($"Wrote {(binaryType == BinaryType.BIT32 ? "32-bit" : "64-bit")} Koaloader: {Path.GetFileName(path)}", InstallationLog.Action, info: false);