I've got a Yamada DVR-8000 and up to now its been great with recording DVD's that I've been playing back on standalone DVD players. However I recently tried to playback a DVD on two PC's and only the title menu could be viewed, on trying to play a title from the menu nothing happens. Can anyone tell me what's going on?? I've been using Packard Bell DVD+RW's and Bulkpaq +R's. Is it a media issue or a player issue?? Maybe there's something I've not set right on the recorder??