I've put the 'Traffic_EHM-PAI.bdl' file in fsx/scenery/world/scenery file.
I've also pu the AI Aircraft in fsx/simobjects/airplanes file.
I've set AI Traffic to 50%
All I can have is EHM AI Traffic now. At hubs I get about 20 EHM planes and no other traffic and at non-hubs I get 1 EHM plane and no other traffic.
Any help?