2009/02/23 21:39:26 - <type 'exceptions.OSError'> Exception in Tk callback
  Function: <bound method StartStopControl.C_start of <pycurrents.system.startstop.StartStopControl instance at 0x84fbfac>> (type: <type 'instancemethod'>)
  Args: ()
Traceback (innermost last):
  File "/usr/lib/python2.5/site-packages/Pmw/Pmw_1_3/lib/PmwBase.py", line 1747, in __call__
    return apply(self.func, args)
  File "/home/currents/programs/pycurrents/system/startstop.py", line 67, in C_start
    self.funcs[0]()
  File "/home/currents/programs/uhdas/uhdas/cruisesetup.py", line 413, in StartCruise
    os.symlink(self.cruiseid, self.pd.datacruiseD)
<type 'exceptions.OSError'>: [Errno 17] File exists