Powered up my P3A and RC. Had just completed the preflight checks and everything looked normal. The green "Safe to Fly" indicator was displayed and the FPV image was showing. Just getting ready to launch when the red "No Signal" indicator came on and the FPV image went dark. Both the Remote Control Signal and the HD Video Link showed full bars. The HD/Image Transmission Setting panel didn't show anything unusual. I tried restarting the P3A, RC, and app. Still No Signal with the FPV dark but everything else looking normal. I flew it around some in this state and recorded those flights. Then I popped out the SD card and put it back in and everything worked. However, I think this is just a coincidence because I later I tried removing the SD card and there appears an "No SD Card" indication which I did not see when I was trying to fly. Firmware 1.2.8, iOS app version 1.2.0. Anybody have anything like this happen?