I try to render a composition in cycles based on motion tracked footage. When I press Shift-Z for render preview everything is fine. But when I hit the render button in the render tab it renders fine first, but in a last step all tiles change to black. The result looks like a scene without light.
I played around with the render layers, but without success.
@cegaton: thank you for the note, here comes a screenshot of the node editor, that was set up automatically. I'm learning blender for a few weeks now and this is my first attempt to compositing.
Does someone have a idea what I'm doing wrong?