i spent some times to try to upgrade numpy 1.16.2 higher possible version with python 2.7.1 on poser 11.1.1.35510 without any success. Looks likes that DLLs (pyd and/or DLL) are the culprites. So i project to use "pipe" datas to my locally installed python 3.9 to work on with scipi.spatial calculations. Anyone of you tried the python mulit processing in Poser 11 ?