Upgrade Problem on Windows

Thank you Urmas. I'll try the TEMP environmental variable.

I don't understand this remark of yours: "You can relocate the Windows Installer folder (by creating a directory junction)"

Someone suggested relocaring Virtual Memory from C:. That indeed serves as a work around. I now have about 2.5GB available on C:.

I'm still interested in this issue even though there is no longer a _critical_ problem.