diff --git a/Source/YAMS-Library/Functions/AutoUpdate.cs b/Source/YAMS-Library/Functions/AutoUpdate.cs
index ad81018..ba4d305 100644
--- a/Source/YAMS-Library/Functions/AutoUpdate.cs
+++ b/Source/YAMS-Library/Functions/AutoUpdate.cs
@@ -39,6 +39,7 @@ public static class AutoUpdate
 
         //Minecraft URLs
         public static string strMCClientURL = "https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft.jar";
+        public static string strMCServerURL;
         public static string strMCVersionFile = "https://s3.amazonaws.com/Minecraft.Download/versions/versions.json";
 
         //YAMS URLs
@@ -76,7 +77,7 @@ public static void CheckUpdates(bool bolForce = false, bool bolManual = false)
                     JObject mojangVers = JObject.Parse(jsonMojang);
                     string releaseVer = (string)mojangVers["latest"]["release"];
                     string snapshotVer = (string)mojangVers["latest"]["snapshot"];
-                    string strMCServerURL = "https://s3.amazonaws.com/Minecraft.Download/versions/" + releaseVer + "/minecraft_server." + releaseVer + ".jar";
+                    strMCServerURL = "https://s3.amazonaws.com/Minecraft.Download/versions/" + releaseVer + "/minecraft_server." + releaseVer + ".jar";
                     string strMCPreServerURL = "https://s3.amazonaws.com/Minecraft.Download/versions/" + snapshotVer + "/minecraft_server." + snapshotVer + ".jar";
 
                     if (bolForce)
diff --git a/Source/YAMS-Library/Functions/Util.cs b/Source/YAMS-Library/Functions/Util.cs
index 4b4369b..23fffea 100644
--- a/Source/YAMS-Library/Functions/Util.cs
+++ b/Source/YAMS-Library/Functions/Util.cs
@@ -69,6 +69,23 @@ public static bool HasJDK()
         
         }
 
+        /// <summary>
+        /// Looks for a working Minecraft client in any given root folder. Useful for custom paths.
+        /// This works only with the vanilla launcher.
+        /// </summary>
+        /// <param name="root">the path to the .minecraft folder</param>
+        /// <returns>boolean indicating if the minecraft client is in the specified folder</returns>
+        public static bool HasMCClient(string root)
+        {
+            //minecraft.jar is deprecated, but possibly working
+            if (File.Exists(Path.Combine(root, @"bin\minecraft.jar"))) return true;
+
+            //If there is a versions folder, assume that there is a jar file in one of the folders.
+            if (Directory.Exists(Path.Combine(root, @"versions\")) && Directory.GetDirectories(Path.Combine(root, @"versions\")).Length != 0) return true;
+
+            return false;
+        }
+
         /// <summary>
         /// Looks for the Minecraft client in the system user's profile, the service runs as LOCAL SYSTEM, so for
         /// some of the third party apps we need to see if it is in this profile too
@@ -76,8 +93,7 @@ public static bool HasJDK()
         /// <returns>boolean indicating if the minecraft client is in the SYSTEM account's AppData</returns>
         public static bool HasMCClientSystem()
         {
-            if (File.Exists(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), @"config\systemprofile\AppData\Roaming\.minecraft\bin\minecraft.jar"))) return true;
-            else return false;
+            return HasMCClient(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), @"config\systemprofile\AppData\Roaming\.minecraft\"));
         }
         /// <summary>
         /// Checks if the Minecraft client is installed locally
@@ -85,8 +101,7 @@ public static bool HasMCClientSystem()
         /// <returns>boolean indicating if the Minecraft jar is in the local user's AppData</returns>
         public static bool HasMCClientLocal()
         {
-            if (File.Exists(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), @".minecraft\bin\minecraft.jar"))) return true;
-            else return false;
+            return HasMCClient(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), @".minecraft\"));
         }
         public static void CopyMCClient()
         {