I'm sorry if this question has been answered a million times before. Here is my problem. I have converted .avi files to .iso using WinISO. I now want to shrink the file, so i can fit it onto a Verbatim 4.7G DVD-R. When i try to open the Disc Image. I get the message "DVD Shrink encountered an error and cannot continue. Invalid USF System." Is there any possible way around this? Or is there any chance that I can get the DVD Shrink to plainly read the .avi files? I tried to burn the ISO image using DVD Decryptor, on to Dual Layer 8.5GB Aone DVD+R blank discs. But, this will not read on my Sony DVP-NS330 DVD Player, even though the player plays DVD-R, DVD RW, DVD +R, DVD +RW etc. The player has no problem with the Vebatim DVD-R. If anybody could understand and give advice. I would be extremely grateful. Thank you.