This evening, for testing purposes, I tried to connect only to the ASI CCD, and since not close to the mount, which I usually connect to via BT, I selected the Telescope Simulator. Following that, EKOS could no more connect to the ASI CCD. I eventually set up the mount, and then everything was fine. Apparently, there seems to be a sequence, following which first the mount needs to be connected, before connecting to the CCD.

I have attached a log file. The issue reported above is close to the end of the file, when I was reproducing the error after some other tests (will report in a seperate post).

Have you tried leaving the mount out altogether? When I shoot darks, I just connect to the ccd and the fw (although I don't really need that). Worked fine last time I imaged (April).