With some random vehicles, when you click export, the specific vehicle disappears from beamng, and no matter how many times you export it again it does not appear.
I too am having this problem,
Also having a problem with the game crashing when trying to export most of my cars.
Any non-standard english characters in their names?
No, they are all English characters and numbers
As much as I have put -, nothing else
with the last patch this had been corrected