Hi

I've just checked out the newest version of matplotlib from github using git (version d5b078b ) and my Animation files didn't work any more.
The error is given below.
I reverted to version cc61700 which gave the same error. By reverting to the one before ( edb1526 ) it worked as before.

Is this a bug?

Exception RuntimeError: RuntimeError('cannot join current thread',) in <Finalize object, dead> ignored
0
Traceback (most recent call last):
File "foo/workspace/PythonTools/Animation/plotHyperAsAnimation.py", line 252, in
main()
File "foo/workspace/PythonTools/Animation/plotHyperAsAnimation.py", line 208, in main
makeAnimation(inputFolder, outputFile, args)
File "foo/workspace/PythonTools/Animation/plotHyperAsAnimation.py", line 196, in makeAnimation
ani.save(outputFile + '.mp4', codec='mpeg4', fps=10, bitrate=2000, savefig_kwargs={'facecolor':'black'})
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/animation.py", line 706, in save
writer.grab_frame(*_savefig_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/animation.py", line 202, in grab_frame
dpi=self.dpi, *_savefig_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/figure.py", line 1410, in savefig
self.canvas.print_figure(_args, *_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backends/backend_qt4agg.py", line 161, in print_figure
FigureCanvasAgg.print_figure(self, _args, *_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backend_bases.py", line 2213, in print_figure
*_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backends/backend_agg.py", line 481, in print_raw
FigureCanvasAgg.draw(self)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backends/backend_agg.py", line 445, in draw
self.figure.draw(self.renderer)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 54, in draw_wrapper
draw(artist, renderer, *args, *_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/figure.py", line 1034, in draw
func(_args)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 54, in draw_wrapper
draw(artist, renderer, *args, *_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/axes.py", line 2086, in draw
a.draw(renderer)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/artist.py", line 54, in draw_wrapper
draw(artist, renderer, _args, *_kwargs)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/text.py", line 554, in draw
bbox, info = self._get_layout(renderer)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/text.py", line 318, in _get_layout
ismath=False)
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backends/backend_agg.py", line 202, in get_text_width_height_descent
texmanager = self.get_texmanager()
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/backend_bases.py", line 614, in get_texmanager
self._texmanager = TexManager()
File "foo/.local/lib/python2.7/site-packages/matplotlib-1.3.x-py2.7-linux-x86_64.egg/matplotlib/texmanager.py", line 169, in init
ff = rcParams['font.family'].lower()
AttributeError: 'list' object has no attribute 'lower'