It happens quite often lately. All of a sudden the Fligtplanner is empty, the already planned flights and the airlines are gone. I have only modded airlines, but i don’t think that is the problem.
New contracts signed after this happens also don’t show up in the screen. The planes that were already planned conitnue landing though.
I’ve had this too, usually after a long session of playing (over about 4 hours). Now I save and exit the game every 2-3 hours to aviod this situation.
I will Try that thanx