I recently had to clear my cache because I kept getting an error message while downloading an update. That worked for that problem, but now I'm getting error messages for all the game and demos I've downloaded since. I'm getting everything from "could not launch game. Please download again" which i tried several times, to something along the lines of "content has move from its , to "this disc is unreadable , clean the disc with a soft cloth etc.." which i got for Costume Quest 2 (an XBLA game....) I've deleted my profile, cleared my cache again, downloaded my profile, and still getting these messages. Help... I'm getting seriously frustrated!