I'm trying to backup my Nickelback Live dvd.. I've tried ripping with dvdshrink to ISO then auto burning with dvd decryptor and also just ripping with shrink to ISO.. then manually opening decryptor then burning both times it seems to burn fine, but when I put the dvd back into the computer it says no disc found.. It seems to play fine on my DVD Player but won't play at all in the computer.. any ideas?? I'm stumped.... I'm using Branded Ridata 4x -R from Newegg. Also it seems like movies copy fine, I've only done 2 since I purchased these riteks everyone raves about.