Intermittent lost communication with instrument panel cluster codes

Here it is 3 years later and the exact same thing has happened to me. Immediately suspected the hypertech; did you ever resolve your issue definitely?

 

Update:
I was having similar issues as the OP was having; most of the dash lights on, multiple warning messages coming up and the tach and analog speedometer not working. I took the Hypertech in-line speedometer calibrator out and reconnected the 40(?) pin connector back into the instrument cluster and the problem went away. I called Hypertech and they said to connect to the Speedo calibrator and try to reprogram it with tire size, etc. I did that, reinstalled it in the truck and it seems to be working fine now.