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[MrSeductify]

 I posted this in the Mass Effect 2 technical help for Xbox 360 forum, but I didn't get any replies so I figured I would post it here.
 This  has never happened to me before in the 8 other times I've completed Mass Effect 2. After I hit the Start button on the title screen and the screen fades to black, I get the "This disc is unreadable" message. I have two copies of ME2 and I tried them both, but neither of them work. Then, I tried signing in with a different profiel, and it works just fine. But once I try to sign in with my profile, I can't get past the title screen. Does anyone know why the game is doing this?