```Traceback (most recent call last):


 "sorl/thumbnail/templatetags/thumbnail.py", line 73, in render

template_origin, (position_start, position_end) = self.source
AttributeError: 'ThumbnailNode' object has no attribute 'source'

Traceback (most recent call last):


 "/home/nd/workspace/ubuntu/madmom/learnmadmon/test_key_chord_downbeat.py", line 160, in <module>

proc = madmom.features.CNNKeyRecognitionProcessor()


 "/media/nd/000FCB1D000052B1/workspace/ubuntu/madmom/learnmadmon/madmom/features/key.py", line 117, in __init__

nn = NeuralNetworkEnsemble.load(nn_files)


 "/media/nd/000FCB1D000052B1/workspace/ubuntu/madmom/learnmadmon/madmom/ml/nn/__init__.py", line 174, in load

networks = [NeuralNetwork.load(f) for f in nn_files]


 "/media/nd/000FCB1D000052B1/workspace/ubuntu/madmom/learnmadmon/madmom/processors.py", line 69, in load

obj = pickle.load(f)


 "/usr/lib/python2.7/pickle.py", line 1378, in load

return Unpickler(file).load()


 "/usr/lib/python2.7/pickle.py", line 858, in load

dispatch[key](self)


 "/usr/lib/python2.7/pickle.py", line 1090, in load_global

klass = self.find_class(module, name)


 "/usr/lib/python2.7/pickle.py", line 1126, in find_class

klass = getattr(mod, name)
AttributeError: 'module' object has no attribute 'PadLayer'
