321 worked great for a while...most of the studios have fixed the protection to cause those errors you noted...
I still got 321..but I use DVD fab decrypter Platinum... Nice GUI and will allow you to seperate large movies into mulitple disks if you aren't using a Dual Layer DVD for example....
http://www.dvdfab.com/free.htm
The free version will take the copy protection off and then you can burn the video files to DVD using Nero or any other authoring software...
Good Luck.
HelmetHead