Okay this is what I've dealt with today. Every time I attempted to start the "Bug the CIA" mission the game would crash, despite the fact that I played and completed the mission just fine the other day. After a few restarts I was unable to get past the main menu and instead of the normal sound effects every time I tried to click on load or resume or whatever I got the grunt effects from enemies getting melee'd. Now I'm reinstalling and am once again having to ignore multiple crc errors. This is seriously the buggiest game I've ever played.