Python KeyError: u'image.composite_image' While saving figure as SVG -

the line:

destination1 = "test.svg" destination2 = "test.png" plt.savefig(destination1, format='svg') 

worked fine in python script until i.t. updated machine run office 2013 (which should unrelated). run python through enthought canopy.

i updated matplotlib, pillow, amoung plethora of other unrelated packages through pip, yet exception thrown line reads

keyerror: u'image.composite_image'  

so falling on png

plt.savefig(destination2, format='png', dpi=700) 

works fine able save svg again. printout of error found below im @ complete loss how solve