Silgrin, from what I can see you don't have python 2.5+ installed, hence the error, you need to download and install any variant of python in 2.5 series, I'm currently using 2.5.1 and the exporter works. You can run python 2.4 series and 2.5 series along side each other with no errors so no need to un-install the old...

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Toolset: Blender, GIMP, Indigo Render, LuxRender, TopMod, Knotplot, Ivy Gen, Plant Studio.