As dmp31 suggests, try updating your software to v. 126.96.36.199. As long as you have platinum, I'd try that first. Both platinum and fabdecrypter would have the same updated decrypter. I've never had to use fabdecrypter, but perhaps dmp31 knows a trick I'm not aware of...it can't hurt to try if platinum fails.
What movie are you trying to bkup? The error "sector not found" could be a "bad" sector as part of the copy protection scheme.