Before I installed Windows XP, I had Windows 2000 Professional, and had no problems with my DVDXCopy or Xpress. I recently installed Windows XP with SP1 and now am unable to play my burnt DVDs on my DVD player or my computer. In addition, some DVD's I burnt which I used to be able to play on my computer, no longer play. For those that I have recently tried to burn, I recieve a DVD Error, Error Code: 89030000, saying Unknown file format. I know the media I am using works, because I was able to use it previously before I installed Windows XP. XPress says the DVD has burnt successfully, and I have made sure all programs are not running, installed PowerDVD (for codec problems) and have also tried installing new ASPI files. Don't know what to do now. It seems as though support lines are down. Can anybody help?