just tried a quick vfr flight to day from EGNT Newcastle to EGFQ Charterhall airfield i have checked and both are in the mnttaxi i just added them both as way points in p2a as its a short flight i could verify the flight but it would not let me file it 

 Log File

i am running version 2.6.23_x64 and Navigraph cycle 2105

Thanks for the report and log file.  Looks like a bug in the File FltPlan for VFR flights.

I'll get it fixed for the next update.

Dave

I can't find EGFQ in the airport database.  The error is occurring due to missing data about the arrival airport, so I suspect the issue is with the EGFQ airport, which I don't have a fix for.

Dave

Thanks 

Think the air ports was added using make runways