Quoted from Djshakes:
I have an F14 that reset a bunch of times last night. Especially when I activated both flippers at once. It did it everytime. I turned game off and back on and seemed to be okay for a bit. Turned it on and off again and it would reset. Turned on and off a third time after checking all the diodes and worked fine. Getting "-error-" message in AU menu which I read was an indication of a bad diode causing resets. Do I just shotgun all the diodes?
the Error message in audits means that that audit has failed its checksum the only connection to a bad diode would be if the diode was causing a reset at the precise moment the audit was updating. Start by replacing the diodes on your flipper coils, to test them you have to lift one side, so might as well just replace them. You might have other issues though, with the power supply chain. Might want to start a separate thread to get more indepth with the sys11 gurus here