Hi Bob,
Thanks for your help. Here are a few thoughts relative to your suggestions;
1. My problem is not intermittent. It always happens at the beginning of trying to run flats and it happens every time I try to run flats whether from Autoflats script or part of imaging script that calls flats.
2. I did change the settings in Maxim as suggested; however, mine is using relays to guide so not set in Maxim for ASCOM. The ACP settings are already as you suggested.
3. Windows did an update 11/20 so I will keep in mind, it may be the catalyst of the problem as it recently started. BYW, do you know how to completely turn off Windows updates in Windows 10 Pro?
Thanks so much,
Rick