I've just tried 2 scenarios for this app.
Windows 8 x64 w/ Office 2013 which results in the Run as Administrator prompt even though I manually right click and hit run as administrator. Windows 7 x86 w/ Office 2010 which results in the Run as Administrator prompt even though I manually right click and hit run as administrator.
I saw in the 2.2.1 version change logs that this was cased by "Somehow I clicked accidentally on a sliverlight reference and now it is looking for that reference. At some point it pops out the Admin message." The issue was apparently fixed but has now reared its ugly head again. Could it be the same bug?