Remove background from rendering - transparent

Support Lighting and Rendering
1

Hey.

File attached at at bottom.

I have a particle scene, lighted with an environment tex. I wish to render the snowflakes alone, but I can’t figure out what I am doing wrong; Film->transparent=on, turned nodes off and even disabled environment. And cut the background environment texture from the world settings. What else is there?

http://pasteall.org/blend/index.php?id=44493

Thanks in advance.

2

Plane.002 is being rendered. Press alt h (unhide all objects), x (delete) left click (confirm delete) and it hsould work fine.

Hidden objects in the viewport may still be rendered.

3

Times like these I wish I could kick myself in the head, of course it had to be the simplest issue.