If all else fails make new lights. It might be a bug. Get some shadows. If you have phtoshop a nice bit of postwork to do is to distort diffuse glow in photoshop. Do it in a layer and set the opacity so that it looks good. I find a lot of times that filter gies images that extra something.

The wit of a misplaced ex-patriot.
I cheated on my metaphysics exam by looking into the soul of the person next to me.