Thanks Dreamer-- I did commit a typo there. I haven't renamed any folders since the squeaky clean install. :) Okay, here's what I've done: I made a new folder called Plug-Ins, and stuck that in my Applications folder. I trashed KPT7 and reinstalled it to this folder. Then under Photoshop's Plug-Ins and Scratch Disks preferences dialogue, I specified the new Plug-Ins folder additional plug-ins. Restart Photoshop. Alas, no joy! I think they just don't work in OSX. I can use these filters if I start Photoshop from within the Mac's Classic environment (effectively running it under OS9 in OSX) but it's sooooooooo slooooooooow when I do that. Ah well... there's always PS6 in OS9. Thanks!