Add instance reference to Main and update asset bundle loading in PrefabManager

Main.cs

@@ -49,6 +49,7 @@ namespace KCM
 {
     public class Main : MonoBehaviour
     {
+        public static Main instance;
         public static KCModHelper helper;
         public static MenuState menuState = (MenuState)MainMenuMode.State.Uninitialized;
 
@@ -229,6 +230,8 @@ namespace KCM
 
         private void Preload(KCModHelper helper)
         {
+            instance = this;
+
             helper.Log("Preload start in main");
             try
             {