If you're using single layer discs, and don't want or need any of the extras, try
DVDFab in "Main Movie" mode - that'll copy just the movie with no extras or menu...might work a bit better.
Just on the offchance, do you have the latest version of DVDFab installed? Latest version is 4.1.2.0 I believe.
As for re-copying the ones that don't work...if they play fine on the computer, re-copying them shouldn't be a problem. However, if there's problems with the discs that even the computer drive can't read, then you'd have to copy again from the original discs.
