shrug install path shouldn't matter I have mine located @ Runtime/Python/poserScripts/ScriptsMenu/D3D/Perfect SSS and run it from the scripts menu.

I also have a load of other things running, so shouldn't be a compatibility issue. .. Including a screenshot so you can see it's working for me. I have set up a definition for La Femme though also, though it does still work with figures I haven't set up yet. Just pops up the "Unknown Figure" dialog when I click "Init".

--------------------------------------------------------------------------------

Consider me insane if you wish, but is your reality any better?