Quote - Ray-traced shadows will be pitch black if you use the correct settings for lighting and materials. The "light emitter" property is only of relevance if you have "indirect light" on in the render settings.

For the light, the shadow will be black only if the "Shadow" parameter is set to 1 (which is highly recommended in any case for realistic renders).

For materials, the shadow will be not black if you have ambient (or translucence, maybe also alternate diffuse) in the material, i.e. anything that may be independent from direct lighting. As EnglishBob said, do a render without any lights on to see if some material glows.

These are shadows cast on the ground plain, with the check for "shadow catch only", so it must be the lights. This is my first render in PP2014, so I will remove the lights and create a new one. I'm pretty sure that the Shadow parameter is set to 1, but I will check.