The only thing I can suggest is to open the exported file using notepad. Scroll down to the bottom and under a section called 'mesh' there should be some coords for the verts. With the settings you have, and the above, I think it would be fair to assume that a model has been exported and the problem will lie with the vehicle sim. Maybe visibility or scale? Best I can offer.

I have spoken with the creator of the game and he said me that I need to export it to x file, with option "no frames" because the frames are not set up correctly.But I don't know how to put this option in Deep Exploration 6.3 program...