Cars Backup

I am still having a problem backing up Cars using DVD Decrypter, Ripit4me w/Fixvts, DVD Shrink and Nero. I have tried several different ways copying the full DVD, just the movie with the wizard and the one step method. It appears to be copying properly and it works on the computer, but not on a stand alone DVD player. When it reads, I get zeros, then play, but it goes to stop very quickly. Anyone have any suggestions? Thanks in advance, WolfpackRon.