I had this prob. with several dvds from china last month. The ifos are corrupt, I think. I tried many softwares to back up and had my first success using smartripper to rip the main movie, making this into a 6gb dvd using TMPGenc dvd author, then using Shrink to shrink the result. This could only keep one soundtrack and lost all chapter information.
I then found a more efficient way of dealing with it. Using software called DVDFab platinum I was able to transcode the DVD in full, to one DVD, with no errors like Shrink or Clone gave, but it transcoded very quick (12-15 mins) and I felt the Qual was nowhere near Shrink. Also the 4.7GB "shrunk" dvds still gave a nav error when loaded into shrink. By using DVD Platinum to copy just the main movie(no menus), then loading that into shrink, I was able to keep commentaries, subtitles, chapter info, and end up with a compliant DVD, albeit no menus....
Hope this helps - The DVDFab plat demo runs for 1 month if u wanna try it.
Good Luck :iagree: