I'm going to open a ticket on this, but wanted to share my resolution first.. I just downloaded the 2010 Q3 release (build 1109) and received a version not compatible, check whether you need an x86 or x64 version of the program. Running Windows 7 x64 version. All other Q3 installers worked fine. This one though, is the only installer that was an .exe. All others are .msi files. Renamed the extension to .msi and it installs without error.
Cheers.
Cheers.