So i just had my artist export from blender and it works! Seems like there's something going on in the export from Max that the plugin doesn't like, something for your backlog I guess :) but thank you for your help!
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You are welcome and good luck with your game, looks interesting! Looking forward to seeing the 3D models in the game. To me it seemed like the origin was the issue, I don't know if blender and max handle that differently. Perhaps it's something else though if you don't do any origin changes in blender before export and that just works.