The autofocus routine failed several times last night because of low flux readings. I'm using ACP 6 hotfix 4 and FM 3.6.0.77. The "Use FocusMax Acquire Star feature" is unchecked. Attached is one of the autofocus log files. Also is attached the p-AutoFocus image which shows a fairly bright star, well centered, that I assume was used for the autofocus routine.
Probably should have checked the "Use FocusMax Acquire Star Feature" just to see what would happen but didn't think of it. If I manually ask FM to "focus" while a fairly bright star is in the image field, the focus routine runs fine.
I was also surprised that ACP gave up after only one try to autofocus.
Joe Morris