Transparent Texture -> Transparent Shadow

Please help me get the object’s shadow to be transparent. I’ve set trashad for the receiving plane and according to all the tutorials this is all you need to do… but it doesn’t work. I’m using yafray to render.

The blend is available here:

Any help appreciated.


I’m using yafray to render
thats why it wont work. you can compost a render or use a photon lamp,for some things.Some times its easiest to just leave the glass out if you can.(like in a window)

You could try turning on trashad button. this allows for transparent shadows.