Estoy empezando con python y tengo este error, ¿por que puede ser?

 D:\WORKSPACE\WhatsApp4Java-master\yowsup>c:/python_3_4_4/python.exe yowsupclient.py     Traceback (most recent call last):       File "yowsupclient.py", line 182, in <module>         loop()       File "yowsupclient.py", line 162, in loop         listen()       File "yowsupclient.py", line 72, in listen         _plisten.start()       File "c:\python_3_4_4\lib\multiprocessing\process.py", line 105, in start         self._popen = self._Popen(self)       File "c:\python_3_4_4\lib\multiprocessing\context.py", line 212, in _Popen         return _default_context.get_context().Process._Popen(process_obj)       File "c:\python_3_4_4\lib\multiprocessing\context.py", line 313, in _Popen         return Popen(process_obj)       File "c:\python_3_4_4\lib\multiprocessing\popen_spawn_win32.py", line 66, in __init__         reduction.dump(process_obj, to_child)       File "c:\python_3_4_4\lib\multiprocessing\reduction.py", line 59, in dump         ForkingPickler(file, protocol).dump(obj)     TypeError: can't pickle _thread.lock objects   D:\WORKSPACE\WhatsApp4Java-master\yowsup>Traceback (most recent call last):           File "<string>", line 1, in <module>           File "c:\python_3_4_4\lib\multiprocessing\spawn.py", line 100, in spawn_mai             new_handle = steal_handle(parent_pid, pipe_handle)           File "c:\python_3_4_4\lib\multiprocessing\reduction.py", line 81, in steal_handle             _winapi.PROCESS_DUP_HANDLE, False, source_pid)         OSError: [WinError 87] El parámetro no es correcto