Same problem here. I have been using Vista since the RTM was released in Mid November hoping that every new release of DVDFab since then would fix the problem.

I to have posted about this in the past with no response from DVDFab. I currently have to burn a full iso to remove the encryption, then open dvdshrink, write down the title numbers, rerun dvdfab and mark the titles I want and reburn to dvd. Its alot of extra work!