I used the rip to hdd function in anydvd. No problems whatsoever. Dvdfab decrypter would probably work too.
With AnyDVD, this worked without any hiccups in Shrink and then Decryptor to burn. I ran it through VOBB first (even though it's not necessary) just to blank all the crap I don't want (trailers, FBI warnings). If you don't have access to AnyDVD, get DVDFab or VOBB. Both will do the job. AnyDVD is easiest though