Thank for all your help on this. The three finished scripts are now on Freestuff as "Find It", as Renderosity either found a Poser 11 tester or let them on anyway. These three scripts don't seem to have blown up anyone's PC yet, and several people have said elsewhere that they're useful.

Yes, for my bodging together future scripts it would be nice to have an auto-assistant that flags obvious errors, re: Python 3. I've been looking for such a thing for Notepad++. I don't yet have Poser 12 as a native testing environment.

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Learn the Secrets of Poser 11 and Line-art Filters.