Quote - I will admit I have no idea what  I'm doing. I ran the script, clicked on a hair group, selected hairs, selected y locks, hit start preveiw and got the message. I tried just clicking on a group and it happened. I'm using p8. is this script for 8? Am I doing something wrong?

Have you added any path markers to the scene?

Looking at that part of the code, I can sort of see how it might get confused, but I can't get it to happen.  I'm using Poser 8, myself.  The script should support all versions of Poser greater than 5.

So you're not doing anything wrong, as far as I know.  You've just found the first bug which I hadn't noticed.

Is this problem recurring?

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.