UnboundLocalError: local variable 'layer' referenced before assignment

[LeeKamentsky]

Running the examples/example.py code yields the following stack trace:

/home/leek/projects/google/neuroglancer/python/examples/example.py in <module>()
     30                toNormalized(getDataValue(2))));
     31 }
---> 32 """)
     33   s.append_layer(name='b',
     34                  layer=neuroglancer.LocalVolume(

/home/leek/projects/google/neuroglancer/python/neuroglancer/viewer_state.py in append_layer(self, *args, **kwargs)
    348 
    349     def append_layer(self, *args, **kwargs):
--> 350         self.layers.append(ManagedLayer(*args, **kwargs))

/home/leek/projects/google/neuroglancer/python/neuroglancer/viewer_state.py in append(self, *args, **kwargs)
    289         else:
    290             layer = ManagedLayer(*args, **kwargs)
--> 291         self._layers.append(layer)
    292 
    293     def extend(self, elements):

UnboundLocalError: local variable 'layer' referenced before assignment

The problem seems to be here: https://github.com/google/neuroglancer/blob/master/python/neuroglancer/viewer_state.py#L288
the line should read layer = args[0]

[jbms]

Thanks for spotting this. It's been fixed now.