I've done many successful single-layer backups with DVD Decrypter. It is a great, free program, and for single layer backups I highly recommend it. But when I tried my first double-layer to double-layer backup, I was disappointed to find that I'd made a $14.00 coaster. I believe I've followed the DVD Decrypter Guide (on the DVD Decrypter Forum) to the letter. But when I tried to play the backup in my DVD player, it was not recognized saying, "no disc". This same disc played the movie fine when inserted in my computer's DVD player. Heres What I used: Verbatim DVD+R DL media Sony DVD RW DRU-700A double-layer burner DVD Decrypter Vers 22.214.171.124 I used the ISO Read then ISO Write (selecting the MDS file) method described on the DVD Decrypter forum. I think that this whole double layer thing is just not ready for prime time.