[phenixbb] error when running the tutorials?

[murphy@eva00 tut-phenix]$ phenix.run_example gene-5-mad Examples to be run: gene-5-mad Running PHENIX example: gene-5-mad Wed May 10 21:24:26 CDT 2017 Working directory: /home/murphy/X-Rays/tut-phenix/gene-5-mad Starting run now ... please wait a moment Could not find platform independent libraries <prefix> Could not find platform dependent libraries Consider setting $PYTHONHOME to <prefix>[:] Traceback (most recent call last): File "/home/murphy/X-Rays/phenix/phenix-dev-2747/build/../ modules/cctbx_project/site.py", line 48, in <module> import os ImportError: No module named os tutorial files look ok. ps running phenix dev2747 happens the same thing with p9-sad