>
> I can't say with any certainty, but my guess would be that this snippet
> provides the clue: you have a bad ifo file. If your ifos and bups
> from the rip aren't correct, then I believe you could just use dvdauthour
> to build some new ones.
> Just a thought...

Well, I don't know much about dvd authoring. I'll have to read into it.
However, if this is really so important, then why does the dvd play
properly if the ifo (I still need to find out what that means) is bad?