I HAVE BEEN WORKING ON THIS PROBLEM FOR WEEKS! I WENT TO DO A PROJECT AND NOTICED MY DRIVE WAS NOT DETECTED IN ROXIO. I TALKED TO HP SUPPORT MANY HOURS AND I ORIGINALLY HAD VERSION 8.5 AND I THOUGHT I WOULD BE SMART AND JUST UNINSTALL 8.5 AND BUY CREATOR 9 AND THAT WOULD SOLVE PROBLEMS. NO WAY! FINALLY, HAD A LOCAL COMPUTER SPECIALIST COME IN MY HOUSE AND DO A SYSTEM RECOVERY BECAUSE HP TOLD ME THAT WAS THE BEST WAY TO SOLVE COMPUTER CONFLICT. HAD HIM BACKUP FILES TO AN EXTERNAL HARD DRIVE, DO RECOVERY AND REINSTALL PROGRAMS, WHEN HE LEFT EVERYTHING LOOKED FINE. AT $95.00 AN HOUR I DIDNT HAVE HIM STICK AROUND FOR HIM TO FINISH PUTTING EVERYTHING FROM HARD DRIVE BACK IN, ALSO HAD NOT LOGGED OUT. WAS LOGGED OFF FOR A DAY, WHEN I CAME BACK, THE DRIVE WAS NOT DETECTED IN ROXIO AND I TRY TO OPEN ANY APPLICATION IT GIVES ME MPEG -2 ERROR. I HAVE SPENT ABOUT $500 ON ALL THIS NOW AND AM ABOUT TO GO CRAZY!!!!!!!

I NOTICED MY PROBLEM WITH ROXIO AFTER I DOWNLOADED PRINTMASTER GOLD 17,NO DRIVE DETECTED IN ROXIO AND WHEN OPEN UP MY DVD,ETC.. IT SAYS MPEG2 ERROR, I AM ALSO HAVING A PROBLEM WITH A ERROR WITH APPSTREAM APPLICATION MANAGER, ARE THESE TWO PROBLEMS RELATED SOMEHOW?

If you uninstall Printmaster does Roxio work again?

You could try a repair installation (from add/remove programs in control panel) and see if that helps. It's quite possible that Printmaster overwrote something that caused the problem