DVD Shrink, AVI2DVD

I have successfully used AVI2DVD, then burned the iso using DVDShrink and DVD Decrypter a number of times. However, after using AVI2DVD for Harry Potter Goblet of fire, I cannot burn the resulting iso, as DVD Shrink gives the following error; DVD Shrink encountered and error and cannot continue. Invalid DVD Navigation Structure. Any help, hints, or suggestions will very much appreciated. Thanks. Elefterios

Hi! Why don't you simply use DVD Shrink to make a backup copy of your original, commercial DVD?

Thanks for your reply. My HP Goblet of Fire isn't a commercial DVD. It's a "download" in .avi. After AVI2DVD transcodes it to .iso image, DVD Shrink alerts me with the error message when I try to load the iso. Other titles I have acquired this way have not been a problem, however this HP is elusive and I can't figure why.