Well other people have managed to burn the NTSC DVD-9 using nero without the fix successfully so i'm not sure what the problem could be. You say that PowerDVD has stopped working so it could be a problem with your system somewhere. Does your standalone player play DL DVD's that you have burned before without problems?The best thing to so is apply the fix and burn with imgburn. Its really easy to do. If you still have problems after the fix then you have a problem with either the media or your system