Since I've bought the dragon teeth expansion pack every time I join a match in the new maps after a minute of gameplay I get error saying "disc is unreadable, please clean with a soft cloth". Been on the phone with xbox live on 2 separate occasions deleted and re-downloaded dragon teeth, deleted and re-downloaded my profile cleared ccache and still same thing happens when I try to play. I LOVE BATTLEFIELD PLEASE HELP! Also all the other maps form naval strike China rising etc... all work just fine, it's only dragon teeth.