Shadow Catcher not working with 3D Text and Camera Tracker

I have a 3D Camera Tracker and 3D Text that I would like to have a shadow for in AE CC (CS6)

I created a light and a white solid.  I oriented the white solid to the plane of the footage and positioned the light such that I see the shadow cast on the white solid layer.

However, I can still see the white solid (obviously, I only want to see the shadow)

If I change the white solid layer settings to "Accept Shadows" from "On" to "Only" the shadow disappears along with the opacity of the solid.

Am I missing something?  I'm using the Ray-traced 3D renderer.