I've started a thread about it in FPV (viewtopic.php?f=31&t=16641), but wanted to venture outside that specific area just in case anyone else could help shed some light on it. Here is the video showing what the issue is: http://youtu.be/fmOmSYSGCLU Brief background...I purchased the P2 from B&H, have flown it just fine with no issues for 2-3 weeks. I purchased several FPV parts for install and did it myself according to a YouTube video (http://youtu.be/TL8pqtEDuos). Everything seemed to be working fine. Before I took it out for it's first flight, I wanted to install the wide landing skid I purchased (http://www.rangevideo.com/en/dji/452-ex ... opter.html). Upon finishing that, I started the P2 and have since been unable to get the LED lights to recognize anything past the IMU warm up flashes. I've double/triple checked all connections and plugs. Nothing is missing. When hooked up to my iMac running the RC Assistant software...I kept getting an "ERROR". Meaning "GPS not calibrated, or magnetic field interference. Please calibrate GPS again in good condition.". That's where I have the problem. How can I recalibrate the GPS, when the LED lights won't show me anything or when I'm in calibration mode?!? I've tried following the magnetization video (https://www.youtube.com/watch?v=kCT1rRE_UIg) and it's not helping bring the LED lights back. Any help would be greatly appreciated.