Auto focus connection error

Just started to do an autofocus run with SGP 3.2.0.603, and immediately got the following error:

“Error setting ISO! The given key was not present in the dictionary”.

This same setup ran fine on previous versions. Any idea why there’s a problem now? Clear skies tonight so I’m going to have to drop back to a previous version, so no time to upload the logs. Would be good to get some help, though.