diff --git a/Helpers/BackupFolders.cs b/Helpers/BackupFolders.cs
index 59331f5..02563e5 100644
--- a/Helpers/BackupFolders.cs
+++ b/Helpers/BackupFolders.cs
@@ -53,16 +53,17 @@ private static string GetTargetBackupFolder(string profileName, DateTime lastCha
         public static int MakeBackup(this GameProfile profile, DateTime x)
         {
             string targetPath = GetTargetBackupFolder(profile.BackupFolder, x);
+            string savesFolder = profile.GetSavesFolder();
             if (string.IsNullOrEmpty(profile.BackupFilter))
             {
-                CopyFolder(profile.GetSavesFolder(), targetPath);
+                CopyFolder(savesFolder, targetPath);
                 return -1;
             }
 
             int counter = 0;
-            foreach (string path in ApplyFilter(profile.GetSavesFolder(), profile.BackupFilter))
+            foreach (string path in ApplyFilter(savesFolder, profile.BackupFilter))
             {
-                string target = path.Replace(profile.GetSavesFolder(), targetPath);
+                string target = path.Replace(savesFolder, targetPath);
                 Directory.CreateDirectory(Path.GetDirectoryName(target)!);
                 File.Copy(path, target, true);
                 counter++;
diff --git a/Memento.csproj b/Memento.csproj
index 10c60b0..9876579 100644
--- a/Memento.csproj
+++ b/Memento.csproj
@@ -4,7 +4,7 @@
     <OutputType>WinExe</OutputType>
     <TargetFramework>net8.0-windows7.0</TargetFramework>
     <UseWindowsForms>true</UseWindowsForms>
-    <Version>1.6.1</Version>
+    <Version>1.6.2</Version>
     <ApplicationIcon>Resources\Main.ico</ApplicationIcon>
     <AssemblyName>Memento</AssemblyName>
     <RootNamespace>Memento</RootNamespace>
diff --git a/Models/GameProfile.cs b/Models/GameProfile.cs
index 1ee9d62..a881f0e 100644
--- a/Models/GameProfile.cs
+++ b/Models/GameProfile.cs
@@ -79,6 +79,12 @@ private static string Replace(string source, string search, string replace)
 
         private string DetectPath(Dictionary<string,string> pathCollection, Dictionary<string, Dictionary<string, List<string>>> prefixMap)
         {
+            if (prefixMap == null)
+            {
+                Log($"Cannot detect path for {ProfileName} on {Environment.MachineName} because prefix map is not specified");
+                return null;
+            }
+
             Log($"Detecting path for {ProfileName} on {Environment.MachineName}");
 
             if (!prefixMap.TryGetValue(Environment.MachineName, out Dictionary<string, List<string>> localPrefixes))
@@ -173,20 +179,6 @@ string UseFirstPrefix()
             return null;
         }
 
-        //private static readonly Dictionary<string, Dictionary<string, List<string>>> PrefixMap = new() 
-        //{
-        //    ["IREALM2022"]= new()
-        //    {
-        //        ["UserProfilePrefix"] = [@"C:\Users\andrewsav\"],
-        //        ["SteamPathPrefix"] = [@"D:\steam\", @"C:\steam\"]
-        //    },
-        //    ["13960-ASAV"] = new()
-        //    {
-        //        ["UserProfilePrefix"] = [@"C:\Users\admas$\"],
-        //        ["SteamPathPrefix"] = [@"D:\Misc\steam\"]
-        //    }
-        //};
-
         public string GetSavesFolder()
         {
 
diff --git a/README.md b/README.md
index c51954d..009a08a 100644
--- a/README.md
+++ b/README.md
@@ -126,6 +126,9 @@ To create a release via GitHub actions update version in `Memento.csproj`and cre
 
 ## Change Log
 
+* 1.6.2
+  * Fixed crash if path detection would run, but no prefix map was specified
+  * Resolved slow downs with path detections on certain code paths
 * 1.6.1
   * GitHub Actions build process
 * 1.6.0