Same here! After the SU4 update yesterday I am getting those red screens with WASM crash notofication, whenever I load the A340 at a runway. Also the landing gear is missing. When I start from a gate everything is fine.
Also autosave does not work. When loading an autosaved scenario, the captain's side window will open, no matter if midair or on the ground and the PFD screen goes blank.
Just for info: I have the A340 downloaded, not streamed. After having above issues yesterday I uninstalled the A340. The plane was then autonatically streamed and everything was fine. I then downloaded the plane again and it also worked for one time when starting on a runway. After then loading an autosaved scenario, all the issues were back.