IIRC VWD is written for Poser 11 and Poser 12 has a updated version of Python 3.7 vs 2.7 so older python scripts won't work in poser 12 without a rewrite to make them Python 3.7 compatible.

Poser 5, 6, 7, 8, Poser Pro 9 (2012), 10 (2014), 11, 12, 13