Hello,
I had exactly the same issue but I haven't any airport in north east of Florida and only these (picture inclosed).
I'm running EFB 1.6.8.33245, P3DV4.2 and no add-on airport in this area the closest one is TNCM from Fly Tampa nor ORBX.
I checked scenery.cfg everything looks OK.
Any Idea ?
Thanks
Alexandre