Agree with dmp31 re: updates and conflicts. It's ok to have them installed, but you definitely don't want to run more than one decrypter at a time, for eg., you stated,
"...I read that I needed
AnyDVD and Fab to copy. I tried that and all I get is
"Error 16" ..." (Both applications will attempt to decrypt).
Also, the configuration of "Polar Express" is a little weird, some folks have had problems with "full disc" option in fab, whereas "main movie" option works just fine. Take a look at the thread on this forum: 'The Polar Express'.