After trying a few tweaks and going back to a default fsx.cfg file, now when FSX loads up no runways or parking spots are selectable only "active runway" in the airport selection box. Not only can I not actually load FSX but when I exit, it crashes with an unknown dll error.

 

What happened to my FSX?

In case anyone also runs into this problem, I fixed it by deleting the saved flight and creating a new one. Something got corrupted in the default flight so every time FSX loaded it was corrupted.