Game stops while loading

The game stops on the loading screen that says “Greatest cars in the world” (features a yellow corvette). The first race worked fine except that the audio stopped working when the video intro ended. After the first race the game stopped at the screen with the corvette and I can’t get past it (no error codes just stops). I have tried removing some of the .dat files in the app data folder, but it hasn’t helped. Any ideas

In case you want to follow along in my thread, I’m dealing with the same and collecting information: http://forums.forzamotorsport.net/turn10_postsm514496_Frozen-at--greatest-care-in-the-world--after.aspx#post_514496