Black Yafray render

You probably see this all the time, but the yafray export 0.0.3 script works fine, i can render any file easily, but it’s annoying having to make materials for yafray especially, and i want to follow some tutorials about it.
So it works in the export script, but not in the render panels. I just get a completely black render that says it takes 00:00.4 to render.

If you mean this:-

It is for Yafray, the export script is for Yafaray, you probably don’t have Yafray installed.
It won’t help - Blender, Yafray, Yafaray - they all look different.