Unfortunately that hasn't done it for me. I cleared out fxo/metashaders folders, did the slow repair, and it was still crashing. Decided to leave it for the evening and try something again tomorrow.
Tried again this morning, placed down a F-15 on Caucasus and tried it in both ST and MT, everything worked fine. Went back to the mission I was originally crashing on, which is on Persian Gulf, and it immediately started crashing as before (works the first time, if I reslot or restart the mission, it crashes on the first sweep).
Update @Timghetta: I'm pretty sure I found a cause for this. I tested on an empty map with 2 different Client F-15Es for both Caucasus and Persian Gulf, everything worked fine. As soon as I forced Civ Traffic on in the PG version, I got the crash.
PG, Civ Traffic on High: Crash
PG, Civ Traffic on Low: Crash
CCS, Civ Traffic on High: Crash
CCS, Civ Traffic on Low: OK