I would argue that ANYDVD did not do it's job if I can't play the copy like I can the original. Other copies have worked so I'm pretty sure it has nothing to do with the system or the media.
The only variables are the program I'm using to copy (I've tried several, from DVDSHRINK to CLONEDVD) and ANYDVD.
If ANYDVD is unlocking the DVD which I couldn't read if I didn't run ANYDVD, then I think the problem lies squarely with ANYDVD. Particularly because part of the copy protection the Grudge is employing obscures the sector size as mentioned here - http://club.cdfreaks.com/showthread.php?t=124366.
So if ANYDVD governs the reading of the DVD and I can't play the resulting copy in my player but I can play other copies as well as the original I think the there's something ANYDVD isn't doing or decoding.
I'm hoping not only that I'm wrong but that someone can tell me where my mistake lies.
Thanks for your reply though HAMP.