Attached is a screen cap from a render I did this morning.
I tried to capture my screen to include all the info I felt might help but Im not sure how much scaling down the gallery I use will do so I hope its semi-usable.
Anywho, Ive included the console. The settings below that and the small render window itself showing my odd result.
The render is from the yafray engine built into Blender. Anyone care to hazard a guess as to why it mangled some of my scene?