[modeller_usage] import errors

I've just installed Modeller 9v5. I ran the examples in the automodel directory. All of them finished fine with the exception of model-parallel. All of them output an "'import site' failed; use -v for traceback" message though.

mod9v5 model-parallel.py 'import site' failed; use -v for traceback Traceback (most recent call last): File "model-parallel.py", line 4, in ? from modeller.parallel import * File "/usr/people/trippm/bin/modeller9v5/modlib/modeller/parallel/__init__.py", line 1, in ? from job import job File "/usr/people/trippm/bin/modeller9v5/modlib/modeller/parallel/job.py", line 1, in ? import socket, random, os, select

Is this because something is missing in my python libraries?

thanks!