I have a new FLI Atlas focuser. A number of times, autofocus fails when SGP moves the focuser out the first time. You can see these points in this log file https://drive.google.com/file/d/0B0KcEqw-v71VYlFwVEF0akhDdjA/edit?usp=sharing - look for “ASCOM Focuser: Error in Move(abs) :”
This only happens on the very first move.
When I cancel the autofocus run, the focuser works as normal.