I have three registered machines, but even removing them all of them and then just adding this one doesn't help
I have two HDs on this machine. Setting the SSD to ID 0 as suggested doesn't help.
Support has given up for many of the cases of this. I still tell them whenever I get a new clue or find something that might matter.
Its still the case that, although two of the machines are windows ten, at the line 6 server it shows the working one as windows 8 and the broken one as windows 10 and that seems consistent with other peoples' experiences