The last screenshot shows expected behavior: nothing is outputted to the console. It’s alright.
Is it possible that after something wend south you ssh’ed into the Raspberry and launched ArduPilot one more time even though the other instance had already been launched at the time?
I’d recommend sudo killall ArduPlane beforehand in order to eliminate the latter issue.
The latest beta is easier to configure. have a look at it, please!
What is happening to the RGB LED on the Navio during the freeze?