After letting the major Anniversary update for Win 10 run on my office laptop (which is identical to my observatory laptop) without any problems I then ran it on the observatory laptop.
On completion of the update Win 10 informed me that it had removed Pinpoint Astrometric Engine as it was incompatible with Win 10.
I thought this was a bit unexpected as there were no problems when I did the upgrade from Win 7 to Win 10. Nevertheless that is what happened.
I have emailed DC3 Dreams about this and I will update you when I get a reply.