Actually I don't have any add on plugins.  I wish I did :)  The shaders I am using are fairly simple.  I am not even using any layered lists.  Since this was supposed to be a quick render scene, just to show off the sub model; all of the other content I am using is straight out of the box shaders from C6 Pro and some poser content.  C6 totally crashed right after I wrote that last message and I had to restart it.