After upgrading to XP Media Center Edition 2005, none of any newly created movie backups are playing in either my Toshiba or Sony set top DVD players. I converted back to XP Pro but still not working. They will copy and burn ok and will play ok on PC DVD players. The media is the same that I used before with great success. Not getting any errors during the burn process. DVD burner is Optorite DD0405. I think I am using all the latest drivers.