Thank you for your response, I do appreciate that very much. This was a clean install of Windows XP Home SP2 about 3 weeks ago. It is an OEM Builder's Licence disc which is full Windows XP Home SP2 with nothing missing, and no garbage added. It was then brought up-to-date with AutoPatcher. Nothing has been removed from the OS and I do not use any programs like nLite at all to remove components and such. Steps: - Removed official Adobe Reader 8 - Installed your Extreme package (did not work, same error) - Removed your Extreme package - Installed your Reader 8 Lite package (did not work, same error) Unless somehow the uninstall of the official Adobe Reader 8 messed with these runtimes, I do not know. What runtimes are these exactly? From Adobe or from Microsoft? Do you know of a package of these runtimes alone that I can download anywhere? Thanks again, Dave