• Put vdrift.py into /scripts/addons.
• Start blender
• Go to File/User preferences/Add-Ons/Import-Export
• enable Import-Export: VDrift JOE/JPK format

The exporter expects each mesh to have a single material with a texture as shader base color input. If you have meshes with multiple materials. Select (all of) them. Switch into Edit Mode. Go to Mesh -> Separate -> By Material.

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