I figured it was probably a knockoff version - GrowCut works awesome. But it costs 80 dollars.

Figure i would give the other program (first post) a try though - see what it does.
maffe if you want to move that folder with the GML matting 8bf in it, you can.Then just point PSPI to where ever you put it
I have a special folder on my desktop named Gimp.Inside it are all my images and other important folders like a preset folder.That folder contains all my photoshop filters in separate folders.
For instance all my Alien Skin 8bfs are in a folder named AlienSkin - then i just point PSPI to that particular folder.
Most of my PS filters i now run through Robs new Shellout script (which opens your current gimp image in XnView or a few other compatible programs), and then you can run your filter and resave the image - then that program will close and gimp will re-open the edited image again and there you go.
Excellent addon to Gimp imho.
PSPI really isn't any longer needed.
You can even run Paintshop Pro's filters through Shellout.
Currently i have 10 programs that i can call through Gimp to edit my images in a different program, and send them back to Gimp.
The only PS filters i run through PSPI now are
GrowCut
Little Ink Pot
Redfield
Alienskin
DC
XImagic
The rest i run through XnView and Robs script - much easier
You can get it here -
http://registry.gimp.org/files/XNViewShell.py.txtJust place it in your plug-ins folder and you will find it under Filters/Shellout
When you run it there is a drop down menu with a list of programs you can open.
You can of course add more if you wish. (you have to edit the python script to add more)
More Info: -
http://registry.gimp.org/node/24977