Looks like Topaz Labs are at it too...

I ended up installing Simplify 4 (and Topaz Software Manager) twice, but the end result was Simplify 4 showing up in the list when I invoke Fusion, along with all the current other plugins that haven't yet been updated. Haven't played with PhotoFXLab thingie yet.

That was on this MBA, installing on the iMac worked right the first time.

Both running 10.8.2, Apeture 3.4.