Hey there,

Quick question, i dont know how to get the Shadow matte material to work when the background is generated by Sky environment map.

It would be great to get results straight in mplay rather than having to move over to cops.

cheers

But it's work for me my friend !!!

I made a SkyLight with Sky Environment Map and assign Shadow matte shader to my objects and I can see shadow result in the Alpha channel in Render !
Check it again