Traceback (most recent call last):

 "/Users/josh/anaconda/envs/Openfolio/lib/python2.7/site-packages/IPython/core/interactiveshell.py", line 3066, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)

 "<ipython-input-14-3f216cf6821e>", line 1, in <module>
df = extended_dfNameError: name 'extended_df' is not defined
Traceback (most recent call last):

 "/usr/local/bin/soundscrape", line 11, in <module>
sys.exit(main())

 "/usr/local/lib/python2.7/site-packages/soundscrape/soundscrape.py", line 113, in main
process_soundcloud(vargs)

 "/usr/local/lib/python2.7/site-packages/soundscrape/soundscrape.py", line 212, in process_soundcloud
filename = download_file(hard_track_url, filename)

 "/usr/local/lib/python2.7/site-packages/soundscrape/soundscrape.py", line 1017, in download_file
if url[0:2] == '//':TypeError: 'NoneType' object has no attribute '__getitem__'