Traceback (most recent call last):


 "/usr/bin/image_export.py", line 57, in <module>

if not Main():


 "/usr/bin/image_export.py", line 36, in Main

tool.ProcessSources()


 "/usr/lib/python2.7/dist-packages/plaso/cli/image_export_tool.py", line 770, in ProcessSources

skip_duplicates=self._skip_duplicates)


 "/usr/lib/python2.7/dist-packages/plaso/cli/image_export_tool.py", line 338, in _ExtractWithFilter

skip_duplicates=skip_duplicates)


 "/usr/lib/python2.7/dist-packages/plaso/cli/image_export_tool.py", line 279, in _Extract
Entry

for data_stream in file_entry.data_streams:
AttributeError: 'NoneType' object has no attribute 'data_streams'

Traceback (most recent call last):


 "/Users/enojb/current/sympy/sympy/sympy/plotting/tests/test_plot.py", line 336, in test_matplotlib_1

plot_and_save_1('test')


 "/Users/enojb/current/sympy/sympy/sympy/plotting/tests/test_plot.py", line 50, in plot_and_save_1

p = plot(x)


 "sympy/plotting/plot.py", line 1348, in plot

plots.show()


 "sympy/plotting/plot.py", line 196, in show

self._backend = self.backend(self)


 "sympy/plotting/plot.py", line 1097, in __new__

return MatplotlibBackend(parent)


 "sympy/plotting/plot.py", line 887, in __init__

self.plt = self.matplotlib.pyplot
AttributeError: 'NoneType' object has no attribute 'pyplot'
