Yes, I did open a ticket, MotobikeMan. I did that before my first post here. I was even contacted by someone who said to put it into remote access mode and he would remote into it and take a look. As far as I know he never did and I've not heard anything since.
I finally did get it to show live TV but it sure isn't as good as it was before the upgrade. With and without a hard drive connected it keeps flashing the start/stop menu along the bottom and when a hard drive is attached, no matter how fast of a SSD drive it is, it still causes slow downs and copy live TV viewing. I do not run with a hard drive attached although it complains when I do where it didn't before the upgrade. I don't know why they don't have an option to not have a hard drive attached if that is what the user wants. I have FIOS fiber TV in the rest of the house and I use the Tablo so I can watch any of the 40 some local channels available while I'm in my family room office.
I messed with this way to much all weekend and all it was was an exercise in frustration because I'd miss half of the shows I watched because of problems. I even did a rescan, checked my antenna to make sure it hadn't moved (still rock solid on the roof) and the cable. I've done everything except the factory reset suggestion so I guess I'll try that tonight.