Hi All -
I saw one post with this error, but it was centered around WiFi problems.
I have a known good FTDI USB to Serial adapter that successfully controls my Celestron mounts, although I don't think this is an adapter issue as I'm seeing command strings passed in the ASCOM trace file.
When I uncheck Autotrack, I receive the same message, suffixed with "Try auto track."
I've used this on two computers with the same results. I am able to connect via WiFi, but I'm not able to connect via the serial port.
The ASCOM trace file is attached.
Thanks in advance for your help.