When you try to export these models for the first time, Blender reports that the meshes have no materials assigned (while they do). You will also notice that the meshes look a bit different, slightly more white or something. Anyway, see the button in the image below? Right now, the 'OB' option is enabled. That's not correct, so you need to click on the little square that says 'ME'. Then create a new material etc. It will export fine, now.
Hope that helps.
Image (RMB click for full version):
![Image](http://i.imgur.com/yeR156R.png)