I have just tried uninstalling PMDG 747 v3 and again received the same error message. This time, I went back to a previous copy of GSX that I had prior to this update. HOWEVER, even with this older file (which I downloaded on August 1st, 2016) I'm still getting the same error. Its interesting though that I see certain files being installed through the LIVE UPDATE feature, like the deicing pads, for instance, that were NOT part of this original GSX update in August. I can only assume, that maybe an error that is unrelated to the actually files, but is sourced to the installation through the live update feature might be causing this issue. If that even makes sense.....
Thanks All, I'll keep researching possibilities from the users end, as I see MANY folks are having this issue. Again, rolling back to an earlier version did not work, so it HAS to be something that's being provided in the live update part of the installation.