Shadows only problem...

Heya!

I’m trying to make an object cast shadows on things in my street. So I rebuilt the street from the cam’s POV and planned on using shadow only rendering to accomplish this. The result is not what I expected based on my previous experience with shadow only rendering… the shadow only layers seem to be casting shadows on each other and I’m not sure how to prevent this…

Attached are the reconstructions with normal and shadow only shading. The cylinder in the center is the only thing that should be casting a shadow…

For good measure I turned off all casting properties on the receiving materials… tried everything else I could think of. The light source is a “sun” lamp.

Thanks for reading and all advice is appreciated…

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