I run ACP controlling Astrometric DomePro4 on Win 7 computer on two scopes. I ran both scopes on 1/4/2021 and the plans completed correctly. On the start of the run on both scopes on 1/5/2021, ACP could not get the dome to move. ACP could not sync the dome to the scope. Since this happened on both scopes, the only thing which changed was an antivirus on Windows Essential. I did a system restore on both scopes to 12/31/2020 and I was back in business.

I will change to a different antivirus.

Dick Post