pyrit -r psk-01.cap analyze
NVIDIA: no NVIDIA devices found
Pyrit 0.4.0 (C) 2008-2011 Lukas Lueg http://pyrit.googlecode.com
This code is distributed under the GNU General Public License v3+

Parsing file 'psk-01.cap' (1/1)...
Traceback (most recent call last):
  File "/usr/local/bin/pyrit", line 6, in 
    pyrit_cli.Pyrit_CLI().initFromArgv()
  File "/usr/local/lib/python2.7/dist-packages/pyrit_cli.py", line 115, in initFromArgv
    func(self, **options)
  File "/usr/local/lib/python2.7/dist-packages/pyrit_cli.py", line 163, in new_f
    f(*args, **kwds)
  File "/usr/local/lib/python2.7/dist-packages/pyrit_cli.py", line 447, in analyze
    parser = self._getParser(capturefile)
  File "/usr/local/lib/python2.7/dist-packages/pyrit_cli.py", line 179, in _getParser
    parser.parse_pcapdevice(dev)
  File "/usr/local/lib/python2.7/dist-packages/cpyrit/pckttools.py", line 601, in parse_pcapdevice
    self.parse_packet(pckt)
  File "/usr/local/lib/python2.7/dist-packages/cpyrit/pckttools.py", line 614, in parse_packet
    if dot11_pckt.isFlagSet('type', 'Control'):
  File "/usr/local/lib/python2.7/dist-packages/cpyrit/pckttools.py", line 66, in isFlagSet
    return (1 << field.names.index([value])) & self.__getattr__(name) != 0
AttributeError: 'BitEnumField' object has no attribute 'names'