Yes, known problem, if the airport contains ProjectedMesh, it will CTD in the editor. You can fix it by removing them manually from the airport XML file, but of course you’ll lose the projected meshes, because even if you add them back, you’ll get again a file that cannot be opened on the next session.
And, even if you compile the scenery externally with the fspackagetool, the resulting .BGL won’t show all your projected meshes anyway, some ( or all ) of them might not show, because the compiled .BGL has duplicate guids and coordinates for them instead of the correct data you put in the XML, the same XML compiled with the previous version of the sim ( remember, it’s not the SDK that compiles the sim, it’s the simulator itself ) will generate a correct XML.
Yes, we notified Asobo about this, and the other problem of Light Rows not working properly too.