Using Astroberry, Gemini2, ASI EFW, ASI1600MM. I set up sequence to take flats, use calibration tool to specify 1000 +/- 100 ADU, check Park Mount. Start the sequence (or Capture a Preview), and the sequence stalls at Changing Filter with yellow light. Uncheck the Park Mount in the tool, the sequence takes off as expected. Mount was parked to begin with. Parking mount even though it's parked normally gives same message elsewhere, but won't cause issues.