MY QB mod doesn't work and I messed up my game

Gnomon:   I would first try to see if you can run the client in safe-mode. If you're using WGC, click on the little arrow next to the big "PLAY" button and select "Launch the game in safe mode".   If you're still using the old launcher, follow this KB: How to launch the game in safe mode   Doing this should allow you to load the game without mods until you find the one causing the corruption and update it. If you're still having issues without mods, please submit a ticketto our CS team so they can assist.