indigo simple scene won't render

I am doing some tests with Indigo, and the scenes I am using don’t seem to be rendering. When I do more complex scenes it works fine. I am new to this renderer, and so it is quite possible my settings are just wrong. I am attaching a .blend for examination. I would be grateful to anyone who could help.

Cheers.

Attachments

Indigo test.blend (233 KB)

Never mind. I got it to work.