16-05-26 00:30:35 homeassistant.bootstrap: Error during setup of component zwave
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/pyozwweb-0.3.1-py3.4.egg/openzwave/option.py", line 69, in __init__
    raise ZWaveException(u"Can't write to device %s : %s" % (device, traceback.format_exception(*sys.exc_info())))
  File "/usr/lib/python3.4/traceback.py", line 181, in format_exception
    return list(_format_exception_iter(etype, value, tb, limit, chain))
  File "/usr/lib/python3.4/traceback.py", line 146, in _format_exception_iter
    for value, tb in values:
  File "/usr/lib/python3.4/traceback.py", line 125, in _iter_chain
    context = exc.__context__
AttributeError: 'NoneType' object has no attribute '__context__'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/homeassistant/bootstrap.py", line 157, in _setup_component
    if not component.setup(hass, config):
  File "/usr/local/lib/python3.4/dist-packages/homeassistant/components/zwave.py", line 211, in setup
    default_zwave_config_path),)
  File "/usr/local/lib/python3.4/dist-packages/pyozwweb-0.3.1-py3.4.egg/openzwave/option.py", line 75, in __init__
    raise ZWaveException(u"Error when retrieving device %s : %s" % (device, traceback.format_exception(*sys.exc_info())))
openzwave.object.ZWaveException: 'Zwave Generic Exception : Error when retrieving device /dev/ttyUSB-ZStick-5G : [\'Traceback (most recent call last):\\n\', \'  File "/usr/local/lib/python3.4/dist-packages/pyozwweb-0.3.1-py3.4.egg/openzwave/option.py", line 69, in __init__\\n    raise ZWaveException(u"Can\\\'t write to device %s : %s" % (device, traceback.format_exception(*sys.exc_info())))\\n\', \'  File "/usr/lib/python3.4/traceback.py", line 181, in format_exception\\n    return list(_format_exception_iter(etype, value, tb, limit, chain))\\n\', \'  File "/usr/lib/python3.4/traceback.py", line 146, in _format_exception_iter\\n    for value, tb in values:\\n\', \'  File "/usr/lib/python3.4/traceback.py", line 125, in _iter_chain\\n    context = exc.__context__\\n\', "AttributeError: \'NoneType\' object has no attribute \'__context__\'\\n"]'
16-05-26 00:30:36 homeassistant.components.recorder: Found unfinished sessions