sometime's it's not the protection...it's the navigation structure of the dvd (imagine that!)
if you've determined that it's not protection by using up to date decryption programs (ie NOT Shrink or Decypter) then the following advice should apply:
anydvd and clonedvd WILL handle it, but if you must use shrink then take the files output from dvdfab and fun them through fix vts or vobblanker (just process, no blanking) and you should be good to go in shrink.
an easier solution would be to rip using the anydvd ripper then process in shrink.
the easiest solutionwould be to use anydvd and clonedvd together and not have to bother with any of the above nonsense.