I was backing up 3rd season disk 6 of Babylon 5 (DVDShrink), and I kept getting an "overlapping i/o" error. Tried my burner as reader and got same message in same place. I tried DVDecrypter and got some error message. I was about to give up thinking it was a read error on the disk when I decided to try DVDecrypter in "Brute Force" mode for decryption and damned if it didn't work! I then ran those files through DVDShrink and everything was fine.