Crash after crash!

So every time I try to change the settings from NOT full screen to FULL SCREEN it cashes on me. I had it windowed because i moved it to my second monitor but now when i try to move it back it wont let me put it to full screen anymore without crashes. Also, whether im using mods or not during a game it crashes on me. CRASH CRASH CRASH. I'm starting to want my money back if its going to be unplayable!

Hi there,

Have you downloaded the most recent update, by any chance?

If so, could you please try reinstalling/verifying your cache?

Cheers,