Every time I try to load the A340, it doesn't want to load. I have waited almost an hour. I have cleared the WASM folder multiple times, I have uninstalled and reinstalled both the aircraft and the game. I have also tried having just the a340 in my community folder, and it still wouldn't load. The A350 loads just fine. Also, if I exit the loading screen of the a340 and try to load a different aircraft, nothing else loads. However, when I load a different aircraft before the a340, it works.

I am having the same issue and did the same steps you did. Never got to fly the plane I bought which is disappointing. Hopefully this gets fixed as the a340 looks really good!