I ran into the same problem with my copy of Photoshop CS6, found a solution, and posted about it here.
You should find the shortcuts for all the Topaz Labs products in “C:\Program Files\Common Files\Adobe\Plug-Ins\CC”. I’ve been wondering if copying and pasting the shortcuts would work too.
I suppose a third option is to open Photoshop CS6 and then click on Edit>Preferences>Plug-Ins…" This should open the Preferences dialog box, Plug-Ins sub-menu. Check the “Additional Plug-Ins” box, then enter “C:\Program Files\Common Files\Adobe\Plug-Ins\CC”. I haven’t tried this so I’m not sure if it’ll work.
