Installed DT's roster, now says disc dirty

[TCrouch]

I can tell you this happened to me last year once. It has nothing to do with a roster file or anything else...it has to do with yanking that memory card out (or putting it in) and rocking the system the slightest bit so it scratches the ring into the disk. No shooter on the grassy knoll, no conspiracies here...just handling the console like a gorilla