Ah ok that revealed the problem. The library apparently wasn't linked properly to my python 2.7 installation. All is well.

Thank you for the help!

Sorry for the delayed response. This was using 4.0. I have also tried installing the 4.1 beta but I get the same error.

Hello all, I just installed the 4.0 and I am having an issue importing the package in python. I get the following error message: import simtk.openmm Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/local/lib/python2.7/site-packages/simtk/openmm/__init__.py", line 36,...