Twilight is not the same as the Twilight Zone movie, so you may not get much satisfaction in here.
Look in the Copy Movie forum and look through the AnyDVD and DVDFab forums for anyone mentioning Twilight. The Search function works very well here at cdfreaks, so you might try that too.
On a new movie like Twilight, you’ll probably need either DVDFab or AnyDVD to decrypt and rip successfully, but I could be wrong in this instance. I’ve seen a lot of new movies this year that had nothing but simple CSS protection.