So I'm flying out at a lake and get an unexpected red led warning light (consistent with a no-fly zone warning) that results in the loss of stick control through GPS mode. Watch this short video for all the details: [youtube]http://www.youtube.com/watch?v=N2hSlhQ9_K8[/youtube] I'm very curious if anyone else has had this specific problem before? Also, after carefully reviewing the "Flight Limits" section of the manual (pages 29-31), I'm still not clear on why ATTI mode would work fine and GPS mode would not. Maybe I am missing something? Oh, and just to answer the normal questions. V+ is all stock, latest firmware, has about 15 flights on this particular unit, no crashes, everything looks normal in DJI assistant, distance limits are set at default values, had a good compass calibration, etc etc. Nothing out of the ordinary until the copter just stopped responding to the sticks and appeared to freeze in place. Not sure what would have happened if I had left in GPS mode, but I didn't want to wait to find out! Being out in the middle of the lake like that, I have to admit I felt pretty exposed! So has anyone else seen this happen before? Any theories on what would cause it?