Hello,
First of all, this is a wonderful mod and an incredible job you made!
I have found that after the last updates of dcs open beta the aircraft has the same problems of the A-4e community mod.
If you try to start a mission from the runway or the ramp, the aircraft appears burried on the ground and explodes as soon as you take control.
It is quite weird. It just only happens when the aircraft is asigned to the player, and not when asigned to IA.