I recently had my Saitek Switch Panel Avionics Master switch stop operating Bus 2 in the default 172. It seems to have occurred after I went into customize the aircraft and turned off the start with engine running checkbox. Before that the switch operated both Avionics Master Switches. Rechecking the box did not fix the problem.
I did not uncheck the box in the G1000 version of the Cessna and the switch panel Avionics Master switch still operates both of the Avionics Busses.
Any ideas on how to fix it?