[INFO    ] Worker binding to socket ipc:///export/apps/salt/run/workers.ipc
Process MWorker-18:
Traceback (most recent call last):
  File "/usr/lib64/python2.6/multiprocessing/process.py", line 232, in _bootstrap
    self.run()
  File "/usr/lib/python2.6/site-packages/salt/master.py", line 601, in run
    self.__bind()
  File "/usr/lib/python2.6/site-packages/salt/master.py", line 544, in __bind
    raise exc
ZMQError: Socket operation on non-socket