A bit more info about WalkThisWay, from a 2007 forum comment by Cage...

"It looks like Ockham's WalkThisWay.py, version 1, suffered from these same memory problems. He suggests that the problem is a Poser memory leak, specifically with Poser 5. WalkThisWay2 avoid the problem using heavy restructuring which seems to remove most of the collision or positioning comparison in WTW1. So apparently no real solution was found for the problem, but it may be that this shows that the problem is indeed Poser."

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