After trying to install the msi package I came to realize that the add-in won't install on a 64-bit version of MS Word. Actually, the codeplex download page notes 32-bit version is supported but it does not say ONLY 32-bit version is supported. So I suppose
it was worth giving a shot.
The installer says "Requires Word 2007 SP1 or later, or Word 2010" when trying to install on x64 Win7 with Office 2010 x64 installed. I guess it does not evaluate Word x64 as a suitable word edition.
Anyways, is this intentional? Will MS Word x64 be supported?
In the meantime, I suggest you replace the error message above to emphasize "32-bit support ONLY".