Hey Reddog9,

I was messin around with your hatch and made a little progress. I have run into similar errors before, and I dont think it is a problem with the exporter, but I cannot prove this because I still don't fully understand what is going on.

First I applied the subsurf modifier, which will delete your bump mapping texture so that will have to be redone. Then in the .obj exporter i turned off the 'apply modifiers' button. It will then export fine, except the objects center seems to change.

So it does export, but I dont know what the original problem is I hope to hear more on this problem from someone who knows more about it.