I probably have 35+ flights on my P2V+ and have had absolutely no issues. I recently switched to NAZA mode and went out to check out the IOC flight modes. On my second flight I noticed after power on - the Phantom completed the system checks and I got the rapid flashing green as expected. It then began to do a alternating single Green and single Red light pattern. I tried switching S1 & S2 a couple times and that did not change anything. I did not want to fly it that way, so I powered off the P and Controller and repowered every thing. It then started acting normally with only green lights. The next couple of flights seemed to work fine. It did it again today and reboot seemed to work, however I am concerned as to what the issue may be. On each time I have had 6+ satellites, full battery, and camera connection. Other than the lights everything seems normal, however I have not flown it this way. I checked both Naza and P manuals and did not see the light combination described... Anyone knows what it means and how to fix it?