So, the toon shader is having... issues for me and I can't find anything on Google or here about it. When I turn the shader on, it creates instant bright lights in two of my characters' hair. I have no directional lights on, only the ambient light set at white. The bright lighting only happens with the toon shader on.
Here's two screenshots -- one of the toon shader off, and one of it on. Nothing else is changed:
Off:

On:

I'll be playing with it while I wait for someone smarter than me to tell me what stupid thing I'm doing to make this happen. Thanks!