TypeError: get_window_extent() got an unexpected keyword argument 'dpi'

[zreitz]

After handling the sub_feature AttributeError, I get another:

  File "[path]/tracks.py", line 159, in _collapse
    bbox = fname.get_window_extent(dpi = dpi)
TypeError: get_window_extent() got an unexpected keyword argument 'dpi'

I'm using matplotlib 1.4.3 at the recommendation of Hanice. Ended up deleting the keyword argument and it seems to work.