Thanks for the replies, Scook and Mystic.
This may be minor to some, but it's been bugging the heck out of me. When I first updated to 2016.04, I ran TH3 and all was fine. The next day, all of the components were grayed out, and the only way I could use it was to run in the 15 day demo mode. Did this twice, and then it ended telling me I'd have to wait for 64 weeks to run demo again!
Decided to do a fresh install, per Sonar's directions. Removed, and deleted instructed registry entries.
Now TH3 doesn't even show up in the plugin scan. It really has me baffled.
Unfortunately, I've been trying to get help from cake, and all I get are confirmation emails with case numbers.
I'm no more than a hobbyist, at best, but I would like to be able to use it when I need it.
Frustrating.