Ok, I've created a model to use in Blender, set it to flat and tried to import it into O2 in OBJ format. The issue is that I'm getting the lines aren't connecting to the vertices, unless I view the model from the back... odd.
I tried using Leo's export to p3d from blender, but every time I try to import it just fails.
I checked the normals in Blender and they seem to be fine... so, I don't know what else to try next. Any help would be appreciated.