So I tried repair, no mods, deleting shaders, removing ajs37 from dcs installation via the game menu and re-downloading.
I can get into F14/MiG21/A10 cockpit. Weirdly I flew viggen last Sunday and it was ok...
Smaller log attached.
That was in the log
EDCORE: No suitable driver found to mount mods/aircraft/ajs37/cockpit/resources/model/textures
VISUALIZER: ILV for cockpit 'AJS37cockpit' not found
Edit: It appears it was one of the cartridge ini files that was the culprit - this is a bit weird as I didn't add any. Maybe one was added when I joined MP server.
dcs.log-20210113-212142.zip