Try deleting the python library in Poser prior to reinstalling.. Perhaps it helps? Not sure though, a general reinstall should have fixed it :o/ you haven't by chance installed other python interpreters?

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.