You're aware that 'print' is one of the key changes between Python 2 (Poser 11 and predecessors) and Python 3 (Poser 12 and up)? It sounds like perhaps you're trying to run a Python 2 script in a Python 3 environment. Print statements, strings, and iterated lists are handled differently.  Print is fairly easily fixed though.

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