You probably mean T4M: https://www.ugx-mods.com/forum/index.php?topic=8092

This is exactly what I was talking about, It's so hard to f...

I don't know if this will make much sense, but I remember a while ago before I reset my pc I had to download something to let custom maps run. Something to do with the "codlogo.bmp" and some rundll32. (Sorry if this dosnt make much sense)