I'm using DVD Shrink to backup The Sixth Sense to my HD. I click open disc, select the DVD (I only have 1 DVD drive, so selection is simple), and it starts its little analysis preview of the disc. At about 59% analyzed, it stops and gives me a message that an error has occured and I must stop. It then says "Cyclical Redundancy Check". What gives? Is there a way around this, is it a bad DVD, or what?