Hi guys and greetings auf den Hahn!
Thanks for pointing this out and Tom´s excellent-as-always analysis of the problem. I will put this one onto our bug-tracker to fix.
Daniel, when you get this console pop-up, the code has faulted and you can´t really use the plane anymore. You can reboot gizmo (flash-symbol on right-hand pop-out menu) and then re-enter your data to continue your flight, though.
Cheers, Jan