Upgraded to 126.96.36.1996 and had successful autofocus runs, then all of a sudden clicking on auto focus run gave Object reference not set to an instance of an object and SGP exit repeatedly.
focuser appeared to be moving OK under SGP/focus lock command.
Tried downgrading to 188.8.131.525 and it would just silently exit when pressing run.
I don’t recall exactly how I recovered but I know I cleaned all USB connections and rebooted.
I’m assuming some usb issue, but it that case it would still be nice in SGP would report vs. bail out.