After manually running the Cumulative Agent Patch 1 and the Roxio Registry Patch on a couple of test workstations Roxio on both systems still isn't detecting the disc drive. I did notice that per the Roxio patch instructions that after confirming that zesdac and PxHelp20 are present in the LowerFilters string that after restarting PxHelp20 is no longer in the registry key. This issue is happening on both XP and Win7 machines with Roxio Basic and Creator Business v10. Is there anything else that I can try to fix this issue?