I get the error "could not perform start of disc-at-once" when I try to burn particular types of files to a DVD-RW. I can burn DVD videos and discs containing MP3's fine. If I try to burn a disc containing only Xvid videos I get the error. I'm using Nero Burning Rom v220.127.116.11. The O/S is Windows XP SP2. The burner is an LG GSA-H42L. The motherboard is an Abit AB9 Pro. Discs are Datasafe Datawrite 2x DVD-RW. I had no problems using Nero v7. Any ideas???