Huh. This time I'm getting a different error than I did the first time. The first time was something like "Windows Installer is not the right installer for this program," but I can't remember the exact verbage.

This time I got "This installation package is not supported by this processor type. Contact your product vendor."

Odd... I wonder what's going on... I did have a Windows Update between the two attempts. I wonder if that's the reason the error message changed.