String assignment to imdat[0]

[itsbenweeks]

One staff member has been having issues when attempting to test his installation with quadratic.tex and receives the following error:

Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/2.7/bin/latex2dnd", line 9, in <module>
    load_entry_point('latex2dnd==0.9.4', 'console_scripts', 'latex2dnd')()
  File "/Users/user/Documents/mitx-vagrant/data/content-mit-8851/src/latex2dnd/latex2dnd/main.py", line 618, in CommandLine
    can_reuse=opts.can_reuse)
  File "/Users/user/Documents/mitx-vagrant/data/content-mit-8851/src/latex2dnd/latex2dnd/main.py", line 298, in __init__
    self.generate_dnd_image()
  File "/Users/user/Documents/mitx-vagrant/data/content-mit-8851/src/latex2dnd/latex2dnd/main.py", line 433, in generate_dnd_image
    self.dndpi = PageImage(self.pdffn, page=1, imfn=self.solimfn, dpi=self.dpi, verbose=self.imverbose)
  File "/Users/user/Documents/mitx-vagrant/data/content-mit-8851/src/latex2dnd/latex2dnd/main.py", line 91, in __init__
    imx = int(imdat[0])
ValueError: invalid literal for int() with base 10: 'x'

In my tests this is a number, not a alphabet character, so I do not receive this error.