Need help. I tried several programs to make a copy of a back-up DVD+R movie. I tried DVD Decrypter, DVDShrink, Nero Copy Disc(ver. 22.214.171.124, Sonic Recordnow and no luck, it stops during the reading process. It says disc is dirty needs to clean and free from scratches. All of the back-up movies were doing the same thing and I know they are pretty okay (no scratches nor fingerprints). I just upgraded Nero from 126.96.36.199. I have a Sony DRU-500A (firmware been updated to 2.1a). Any ideas. I'm successful though when using DVDShrink when backing up original movies and burning them with Nero but no success on already back-up discs. That I know the burner is not the problem. Need help.