Laurie - look great.  If you don't have any lights in the scene (and I assume there are no lights in the scene), then the Blinn will not work - it will output black.  You need to add reflection nodes to the jacket leather (as you've done on this skin).

The render to render results will differ slightly because the irradiance cache gets recalculated.  If you use high enough cache settings it should be pretty consistent.

Creator of PoserPhysics
Creator of OctaneRender for Poser
Blog
Facebook