erm...just downloaded TU1, went to make changes and but everything still works. TU1 is compatible as far as I can tell right now. Uninstall all DLC and then run the game on TU1 and let me know if it works. It's probably DLC affecting this game. If it is DLC depending on what the DLC is I might make a update but only if it's new missions etc. I CBA to do it for like a skin update or one new weapon or some crap lol.