AC Support (Johnny) fixed this for us. There is a special DatabaseTunerV612.exe you need to run. The installation dumps you onto the website to download and run the tuner, and it is not clear to me that the V612 tuner is there, certainly I didn't find it and so I was running the wrong tuner. Johnny transfererred it directly to our main machine. So this seems like a pretty big installation flaw with V6.1.2 self-install, but I am happy we are up and running.
