Test Drive Unlimited 2 worked now freezes on certain things?

I played it literally fine for days. I did all the races up to A5 in hawaii, and now it doesn't work. If I start a race, be it A4, A3, A2, A1, B3, C3, they all freeze when I select an individual race inside that championship series. I did all the license tests fine. I can do all the side missions, such as convoys or trailing people, or delivering vehicles. I can do EVERYTHING but actually load into any actual race. Help? I even completed A5 2 days ago and it doesn't load either. Freezes my entire xbox 360 up. The forums for the game have been helpless. The disc is in perfect condition. I've disconnected from Xbox Live, Deleted it off the HDD, played from the disc.. I've done everything. Only the races freeze. Please help!?