Re: Suddenly Corrupt File
If you can still git into the game it might be a weapon glitch. If that isn't what it is you can try starting a new file or if you have your old file backed up you could re download a old saved game. If none of that works you could try re installing the data if you do that though you will have to re download your online pass things. Other then that all i can think is to call Microsoft if none of the above works.