Problem with The Descent 2 and other movies

[AGJ]

Someone suggested that I disable Pathfinder to get it to work.

Do you own a Toyota 4X4? If not then how can someone tell you to disable Pathfinder? Now you can disable Pathplayer but I believe for those movies you are trying you need Pathplayer Always enabled as that my setting for DVDFab and I had no problem with my version of the DVDs you are having issues with