I was recently sent a DVD-R with video and photos of our grandchildren. I copied one of the videos to another disc in Nero Vision Express and left copying the rest for the next day. I did try to copy the whole disc, putting the photos as a slide show, but the burning kept failing. On returning to it, the DVD will not immediately launch in the drive - it appears to "hunt". When it does launch, it shows up as blank. Checking in Nero, it confirms that there are files on the disc. I have tried the disc on another machine, with the same result. I obviously could not have deleted the disc and have given it a good cleaning, although not needed. Any help would be appreciated.