Hi Keith,

There are a number of reasons why you might get this error. For me to be more helpful you'd need to post of the log with verbose Focus logging set on. But here are some thoughts in the interim...

You imply sometimes Focus was working, sometimes there were issues so seems to be an intermittent problem. You also mention you could make out stars in the frames where Focus was saying no stars were detected. This would fit with some sub-optimal parameter settings that work some of the time but not always.

You could post screenshots of the parameter settings and I could comment on those. Alternatively, you could run FocusAdvisor and let it update your parameters. Usually FocusAdvisor will pick a reasonable set of parameters for most systems that will minimise the sort of problem you have.

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