It appears that python 2.7.6 breaks the SDK. I've got two virtualenvs - one running 2.7.3 and the other running 2.7.6. My connections work fine with 2.7.3:
(VENV-ucsm)rohorner-mac:ucs rohorner$ python -V
Python 2.7.3
(VENV-ucsm)rohorner-mac:ucs roho...