Before I found how to install this python script, exporting models for Racer was a real pain. For example, as I do model with LightWave3D[8.5] on Mac, cause I like it , I had to import this *.lwo in Blender to then opened it in Blender's PC version, to be able to use the Python DOFExporter's script. Now, my mac users friends, forget it!
The reason why I wasn't using the exporter script with my Mac version of Blender, was that I some errors didn't allowed it (e.g "No module called Mesh2Dof" or "No module BPyMessages") using the script from the text editor. It took me some time to find out how to solve this errors.
First you'll need the last version of Blender for Mac (today it's the 2.47 Intel or PPC), cause you need this "BPYMessages" module, which my previous (2.42 Intel) version didn't have.
Then, you'll have to copy the *.py files (those given by Boomer541 in his build a track tutorial) in the right directory. I first believed that Blender's application directory was the good one: wrong.
You have to paste the *.py scripts here : [BlenderDirectory]/blender.app/Contents/MacOS/.blender/scripts/. You can use Terminal or whatever you prefer to do that.
When done, open Blender application and you should find the Racer exporter(*.dof) in the "Export" menu!!
It worked for me, but use at your own risk. Hope it helps !
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