Ok everyone (including and especially WGT), I just used my Advanced Remote Tech Service. They took control of my computer and, after explaining the issue, and seeing it for themselves, determined it is...
WGT SERVER'S PROBLEM...NOT MINE IN ANY WAY,SHAPE OR FORM!!!
So WGT...will you please fix this or are you going to do nothing for me? Sending the same info to Customer Support right now. And how is it that I can sign in and forum post but not be able to play? And why am I defaulted to "guest" status after every attempt to "Play Now" no matter what setting I start with?
Forgot to mention that, at my suggestion, they downloaded Google Chrome, accessed the game thru it and encountered the exact same error as with my IE. So it isn't IE causing this (which I already knew).
So I cannot play at all until WGT fixes this. All I can do is wait for them to act within my lifetime.
And yes, I cleaned and formatted my disc.