I've had a few *.iso's that complain that come up with a screen stating the firmware of the bluray player needs to be updated in order to play the disc. One example I know of off hand is Alien Resurrection (20th Century Fox) Any chance that removal of region code, copy protection, UOP's, etc. cause this problem? Usually I can strip the movie out into MKV and make the movie work, but I do like to keep the whole disc.
TRJ