in Materials, under Filters, check "is an emitter".

In the section right to that, click USE for the top option "Is an emitter", UNcheck the option itself, and click the Assign button below. Now the filtered list of materials should be empty, as all materials are not an emitter anymore.

Actually, Poser lights are nightmares in LuxRender as these are taken as miniscule light points producing very hard shadows, like your camera flash. It's better to have some objects, like boxes, which are emitters lighting your scene. Photographers enjoy softboxes for the same reason.

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Usually I'm wrong. But to be effective and efficient, I don't need to be correct or accurate.

visit www.aRtBeeWeb.nl (works) or Missing Manuals (tutorials & reviews) - both need an update though