first sorry for my english, i'm french. I precise my phantom 3 advanced is new (i received it Friday) and the messages appeared since the beginning.
I don't know if it's the same problem but i had a "MC data error" but neither during flight, just by intermittence after powering the phantom. Even with successfull Updates, gimbal calibration, IMU calibration and compass calibration, format data, format SD card and the message SAFE TO FLY in green, i had an error message with the data. It's a little message when i click on green safe to fly and entering the menu . It's writing in green "Firmware is the latest" with a little warning icon. When i click on i have "data recorder error", contact your .......
My sailor don't know what happen and want to return the phantom but i don't really want because it flight very well even if i have this " residu" of message. So i tried to fix the problem and i just find the solution this morning.
You have 2 sd card in your phantom 3, one is called "sd card" and received photos and videos in the gimball (using for updates). And one is in the phantom and is calling "data records". You can see it if you remove battery, you can see on the top and touch it.
The consequance of my message "data recorder errors" was that the phantom couldn't record data flight and my PC couldn't indentify the phantom by the usb port.
my solution:
I removed the battery, just press a littlle on the data sd card with my finger. I felt a little "click" and the message disapeared ! No errors message, usb port recognize and acces to the .DAT logs of the flight.
So it was just a problem with the contact of the sd data card i think.
hope this help the community.