Running into this bug (among other LaTeX formatting issues on iPython QtConsole):
In[52]: abs(x).diff()
/Library/Python/2.7/site-packages/IPython/core/formatters.py:239: FormatterWarning: Exception in image/png formatter: Expected end of math '$'
$\left(\Re{x} \frac{d}{d x} \Re{x} + \Im{x} \frac{d}{d x} \Im{x}\right) /\left\lvert{x}\right\rvert$ (at char 0), (line:1, col:1)
FormatterWarning,
Out[52]:
d d
re(x)⋅──(re(x)) + im(x)⋅──(im(x))
dx dx
─────────────────────────────────
│x│
Python, iPython, and sympy are all up to date. Any insights onto why this error is occurring? It started appearing after I upgraded to OS X 10.9.