Alpha and Yafray

I’m sure this must be an obvious thing but I have searched for answers and only found one relevant post that didn’t answer my question.

I’m using the LSystem script which has leaf textures with alpha channels. When I render in the internal renderer it works fine. When I do it with Yafray the alpha map doesn’t work - or it seems it does partly - the shadows look right. I’m using Blender 2.36, Yafray 0.0.7 on Linux (Debian).

How do I get it to work?

Try .0.0.8 and Blender 2.37a Might be an image export issue.