I finally solved this problem after three days of no joy. The key was using a program I have called Your Uninstaller 2006. It has an advanced uninstall option. When I put in Roxio it found about six different hidden Roxio programs that were still on the system -- or at least remnants. Once those were removed, and I did registry cleans using RegCure and the Vista version of XP Repair Pro, the program (EMC 10) finally installed without that blasted error. I just thought others might benefit from this information, as I was helped by reading this thread. Good luck to everyone that's been suffering through this install issue.