John,
After MartyE upgraded my TIU and HHRC's to 6.1 I had to Read one of my engines and TIU into the DCS HHRC 4 times, before it finally entered correctly. I could not make it work entering the engine via the normal process, but the Engine entered finally using the READ function.
This only happened with one of my engines, all the other engine entered the 1st time, using the normal process. I have been running DCS sense it hit the market, don't feel bad about what happened.
Glad you finally go the engine entered.
PCRR/Dave