Okay. I believe that these forums are very helpful when folks are honest.
So - I learned something. Honest. Imadot is entirely correct and that response had me looking again.
When you are essentially starting over (back up your current profiles before upgrading, please
) and you didn't back up your current profiles before upgrading, you should make sure that you select the correct tracking device at the top of the profile window. Yes. I was trying to use the WRONG device.
With that corrected and by moving my Track IR camera more in line with the Track Clip Pro, I now have what appears to be a BRAND NEW TrackIR. I am enjoying the rebuild of my two Aces High Profiles and I'm learning to enjoy it more. There's gotta be something good in that!
So. No problems with the 5.3 update thus far. All is well.