Ok, I worked it out and now it's rendering.

Thank you very much for your help

Thanks. But it only helped partly.

Now there occures near the same error.

Fatal Error: IndigoDriverExcep: SceneLoaderExcep: No such uv set 'UVTex'
Stopped.

I wrote UVTex into every line where it is needed, checked three times.

What have I done wrong?

First I'm new so "Hello" :) I installed Blendigo 1.1.7 and Indigo 1.1.7 and tried to export a scene. But after a few Ignoring degenerate triangel messages an error occured. No such uv set 'uv' I use many uv textures in my scenes but this error never occured to me before. How can I fix it or locate t...