track exporting problem

[NaN]

I've pushed a few changes to the script ( https://github.com/VDrift/blender-script.../blender26 ).

When no texture is linked to a mesh, the jpk exporter will try to use the first texture of object material(s), so that you don't have to link them manually.

Roads will now also apply their object transform on export. No need for doing it manually, as shown in the video.