AnyDVD detects mastering error in backups

I make backups with AnyDVD and CloneDVD (always including the movie menu), and burn the ISOs with DVD Decrypter. Lately I am having problems when I try to read my own backup in the computer: AnyDVD gives me the following message:“This video-DVD is mastered incorrectly: AnyDVD will be deactivated for this DVD.”

Does anybody have an idea what is the problem? Could this have to do with using the latest version of AnyDVD?