I've had my game for several months, and never had a problem with the disc. I played it last night with no issues. When I went to play it today, I got an error message. Haven't been able to play it at all; at one point, my Wii wouldn't even read the disc. Other games are fine, it's just the Beatles Rock Band, and the disc isn't dirty or scratched. I contacted Nintendo, but I don't know when they'll respond. Has this happened to anyone else? Does anyone have any suggestions?