For reasons I cannot understand, figures that I render in firefly have stopped casting shadows on the extensive assembly of props I've set up as a backdrop. The figures will cast shadows on each other if the lights are set up right, but not on those props.

I recently reparented those 100+ props (which are all from the Poser Primitives folder) around a central prop so I could rotate the entire assembly around the figures. Could that have anything to do with why they won't take shadows?

Also, I tried exporting the whole assembly as an .obj, but my figures do not make shadows when I render them against that, either.

This happens with both raytracing and depth mapping. I've double, triple and quadruple checked to be sure the lights and figures are set to cast shadows.

I'm using poser 7, on a windows xp pc.

I'm at my wit's end,and any help would be greatly appreciated.

Thank you.