about the not working fsaa:

the fsaa dll probably works, but the edges aren't postprocessed, as they are calculated afterwards. and there is an edge, or there is not...
There is no blurring between them.
you could overcome this by tweaking the toon shader, or by applying a very small blurring after the toon shader(a radius of... 1, 2 pixels).

sorry for my bad english, but I hope you get my point.