Had my first sync-drop during a gig on Friday. Happened mid-set, so I didn't notice. Had 4 MyFader users wirelessly controlling their own monitors, and two iPads running Master Fader. I noticed during a break that the one that was docked stopped metering. It would not pass iPad audio to the mains for our break music, which sucked, but we kept the break short and went into our second set.
Couldn't wait around to troubleshoot. Bummed, but don't really feel like it's a complete failure, since the show just went on.