This one is going to need to go to the Diffraction Limited MaxIm DL support forum. ACP was waiting until the image download was complete by polling Camera.ImageReady. During this process, MaxIm reported that error, and specifically it appears to have come from the Andor driver (which I am guessing is called ASCOM.SDK2.Camera, a strange name for a camera driver). Anyway the the stuff after the **Script Error... line is coming from MaxIm ... failure to download the image and the reason give.