Thanks to *all* of you who have responded. I actually kinda want to use the Matmatic tool for more than just skin, so I thought I'd invest a bit of time into getting my head around it. Getting there, but I think there are still issues with the compiled stuff. I've downloaded the Poser 7 version from his googlepages site, so I'm pretty sure I have the current version of this..

I wrote an abbreviated version of the V4Collection class (see attached file) and embedded it in the Shader script. Generates an error I can't sort out, because I used the same syntax and everything as was in the docs. Also, I'm still running into the same problem with references to P6 showing up.

----- MATMATIC COMPILER -----

verbose 1

Processing script C:Program Filese frontierPoser 7RuntimeLibrariespose! RobynsveilSimpleShader01.mm1.txt -> pose
MATMATIC Script Error: invalid syntax (SimpleShader01.mm1.txt, line 23)

Traceback (most recent call last):
File "c:program filescurious labsposer 6runtimepythonmatmaticcompiler.py", line 233, in processScript
File "C:Program Filese frontierPoser 7RuntimeLibrariespose! RobynsveilSimpleShader01.mm1.txt", line 23
Skin = None
^
SyntaxError: invalid syntax

------ MATMATIC COMPILER DONE -----

You can see my dilemma. I have no such folder or file, even... my compile.py is in:
:runtime:Python:PoserScript:ScriptsMenu:BagginsBill:Matmatic

This is so that I can run it from the main Poser system menu at the top as opposed to the Python Scripts thingie - mine is chockers.

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks