But, it's doing the same thing on Zombie Realism v2.2 and I have tried every map...
Then you have a loose file in your mods folder.
Referring to the UGX Map Manager FAQ,
Quote
4. I installed a map using the Manager but when I try to play the map, it gives me a script error window during loadingOR the map has unusual problems such as constant reloading or no zombies spawning. -You most likely have "loose files" in your mods folder. Check your folder and make sure it ONLY contains folders. Avoid having ANY loose files such as in this example: