File "gausmapscan.py", line 42, in <module>
    sky.sample( gallactic )
  File "../pylib/skymapsampler.py", line 98, in sample
    pool_output = pool.map( self.sample_helper, pool_inputs )
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 251, in map
    return self.map_async(func, iterable, chunksize).get()
  File "/usr/lib/python2.7/multiprocessing/pool.py", line 558, in get
    raise self._value
cPickle.PicklingError: Can't pickle <type 'instancemethod'>: attribute lookup __builtin__.instancemethod failed