IPython thinks that it crashed when matplotlib dies #3791

In [7]: Traceback (most recent call last):
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/figure.py", line 1006, in draw
    func(*args)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/axes.py", line 2086, in draw
    a.draw(renderer)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/artist.py", line 54, in draw_wrapper
    draw(artist, renderer, *args, **kwargs)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/text.py", line 531, in draw
    bbox, info = self._get_layout(renderer)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/text.py", line 313, in _get_layout
    ismath=ismath)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/backends/backend_macosx.py", line 152, in get_text_width_height_descent
    self.mathtext_parser.parse(s, self.dpi, prop)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/mathtext.py", line 3010, in parse
    box = self._parser.parse(s, font_output, fontsize, dpi)
  File "/Users/aaronmeurer/anaconda/envs/ipython1.0/lib/python2.7/site-packages/matplotlib/mathtext.py", line 2344, in parse
    str(err)]))
ValueError:
\begin{array}{ll}\cos\theta&-\sin\theta\end{array}
^
Unknown symbol: \begin (at char 0), (line:1, col:1)

If you suspect this is an IPython bug, please report it at:
    https://github.com/ipython/ipython/issues
or send an email to the mailing list at ipython-dev@scipy.org

You can print a more detailed traceback right now with "%tb", or use "%debug"
to interactively debug it.

Extra-detailed tracebacks for bug-reporting purposes can be enabled via:
    %config Application.verbose_crash=True