Anyway, posting here in case someone else is having the same issue and is guessing about a solution. Thing is that it depends on the user and, more precisely, on the type of flight one is trying to frag (dca, patrol, training, etc). You have to be as precise as possible about the role of the flight: for example, I was trying to create a training flight outside the borders of the faction I was playing with (Israel). As soon as I changed the role of the flight to an offensive one or I planned the training flight inside Israeli borders, the error message was no more. It makes sense.
Inviato dal mio Nexus 5 utilizzando Tapatalk