One last suggestion, right click autorun and choose run as administrator. I do this even though I'm signed on as administrator. I don't know if this does anything extra than just being signed on as administrator, though Basically, if I'm installing nearly anything for Sage (except wkstation for TS), I do it this way and I don't have too many issues. If you uninstall anything, be sure that the folders get removed, too. You might need to do that manually.