You're just one of the lucky ones. On the steam version I can't get GFWL to even start...so I can't save my game. Took me 3 hours of fiddling yesterday to find out it didn't copy my PhysX driver .DLLs over and had to manually do it or the game wouldn't start.
The game is loaded with glitches and errors. Not to mention it's an obviously unpolished console port with literally NO pc support to it minus the fact it actually starts.