Hello all! We recently purchased a Phantom Vision 2 Plus. We also own a Phantom 1 and have flown it for a year now. So here's what's happened: our first test flight with the new Phantom was perfect. Easy calibration. Easy up, easy down, great video. Stopped when battery ran low. Recharged it. No error messages from app. Two day later, took it to a new location, not more than three miles from first location. Easy calibration. Easy up, easy down. Battery warning light flashes on app. We move to a new location, not more than 1/4 mile from where we just flew less than 5 minutes ago. Put in new battery. Run through setup. Immediately see the error message "IMU Calibration Required" on phone screen. We didn't have the laptop with us, so we packed it up and called it day for the Phantom. This morning, we use the Assistant Software to recalibrate the IMU. It says it's successful. Take it in the middle of a field to attempt to fly it. After power up, yellow lights begin to flash. Try to calibrate the compass. It won't. The motors won't start. Joysticks were in proper position as was toggle switch. No errors showing on app. Tried to rebind the RC unit. Via the lights, it was successful. But still, only yellow rapid flashing lights on Phantom. Take it back, hook it up to the RC Assistant software. Can move sticks to show up on there. But still only yellow flashing lights on quad after power cycle. Have a RMA to send it back. But thought I'd ask here to see if anyone else has experienced this. As I said, this was only our third flight. No crashes, no close crashes. Heck, the propellors are still clean. Thanks for reading the short novel. I love what I saw in the short time I saw it!