Jwegener, if your still out there, wondering if you ever saw this again. I just got my Phantom in the last week and have gotten this error twice. Googling brought me to this thread only and no other references that I could fine so I'm guessing it is fairly uncommon. I called DJI and they reco'd advanced calibration also, which I did last night. Haven't had a chance to fly again, but I'll probably have a chance today.