I was trying to make a back-up copy of Aviator and this is what I did and what happened: 1. Use MTR to rip A. 1st try Full Extraction B. 2nd try Main Features 2. Used DVD2OneX A. 1st try Disc Copy B. 2nd try Main Movie 3. After DVD2OneX was done I tried Apple DVD Player to see if the finished dvd2onex file would play and got the error message: could not detect a valid media file. I got this message both ways I try to use Dvd2OneX. Am I doing something wrong. I've used MTR and DVD2OneX more than 100 times to back up my movies and never had a problem before. Anyone got an idea as to what may be causing this error message.