Back up trouble with DVD Shrink

[Shanseal]

Hi, I'm new here. Just started backing up DVDs recently. Am using the latest version of AnyDVD and DVDShrink and also DVD Decrypter. I've encountered problems with a couple of DVDs recently. Both AnyDVD and DVD Decrpter show as having decrpted the DVD (Stranger Than Fiction) but then DVD Shrink cannot read it (and error comes up saying something about it being unable to read it, neither the DVD after AnyDVD is done with it nor the files on my hard drvie backed up by DVD Decryter). Is there another program similar to DVD Shrink that would solve the problem??

Also I had trouble making a copy of another DVD (The Aviator) that was successfully 'shrunk' (with DVD Shrink) to my hard drive, but my DVD burner (Sonic) will only burn half of it and then encounters an error and has to close.

Any suggestions would be very much appreciated. Thank you!!!!