Fails on image ref in markdown

Hi

I fail to load a book due to an image in a MD cell.

I have a small notebook `mylib.ipynb`
[Cell 1 - Python]
```python
#
var = 1
```

[Cell 2 - MD]
```markdown

... the below also does not work...

```

And a notebook importing:
```python
import ipynb.fs.defs.mylib
```

When running this, I get
```python
File "", line 11
^
SyntaxError: invalid syntax
```

This is OSX. Python 3.6.1

Packages:
```
appdirs==1.4.3
appnope==0.1.0
attrs==16.3.0
Automat==0.5.0
awscli==1.11.87
bleach==2.0.0
botocore==1.5.50
cffi==1.9.1
click==6.7
colorama==0.3.7
constantly==15.1.0
cryptography==1.7.2
cssselect==1.0.1
cycler==0.10.0
decorator==4.0.11
docutils==0.13.1
entrypoints==0.2.2
et-xmlfile==1.0.1
excel-modelling-helper==0.3.0
Flask==0.12
Flask-SocketIO==2.8.4
google-api-python-client==1.6.2
html5lib==0.999999999
httplib2==0.10.3
idna==2.2
incremental==16.10.1
ipykernel==4.6.0
ipynb==0.4
ipython==5.3.0
ipython-genutils==0.2.0
ipywidgets==6.0.0
itsdangerous==0.24
jdcal==1.3
Jinja2==2.9.6
jmespath==0.9.2
jsonschema==2.6.0
jupyter==1.0.0
jupyter-client==5.0.1
jupyter-cms==0.7.0
jupyter-console==5.1.0
jupyter-core==4.3.0
lxml==3.7.2
MarkupSafe==1.0
matplotlib==2.0.0
mistune==0.7.4
mpmath==0.19
nbconvert==5.1.1
nbformat==4.3.0
networkx==1.11
nose==1.3.7
notebook==5.0.0
numpy==1.12.0
oauth2client==4.1.0
olefile==0.44
onedrivesdk==1.1.8
openpyxl==2.4.2
packaging==16.8
pandas==0.19.2
pandoc==1.0.0b2
pandocfilters==1.4.1
parsel==1.1.0
patsy==0.4.1
pbr==1.10.0
pexpect==4.2.1
pickleshare==0.7.4
Pillow==4.1.0
ply==3.10
prompt-toolkit==1.0.14
ptyprocess==0.5.1
pyasn1==0.2.3
pyasn1-modules==0.0.8
pycparser==2.17
PyDispatcher==2.0.5
pydot-ng==1.0.0
pydotplus==2.0.2
Pygments==2.2.0
pygraphviz==1.3.1
pyOpenSSL==16.2.0
pypandoc==1.3.3
pyparsing==2.2.0
PyQt5==5.7.1
pyspark==2.1.0+hadoop2.7
python-dateutil==2.6.0
python-engineio==1.2.3
python-socketio==1.7.1
pytz==2016.10
PyYAML==3.12
pyzmq==16.0.2
qtconsole==4.3.0
queuelib==1.4.2
requests==2.13.0
rsa==3.4.2
s3transfer==0.1.10
scipy==0.18.1
Scrapy==1.3.2
service-identity==16.0.0
simplegeneric==0.8.1
simplejson==3.10.0
sip==4.19
six==1.10.0
statsmodels==0.8.0
stevedore==1.20.0
sympy==1.0
tabulate==0.7.7
terminado==0.6
testpath==0.3
tornado==4.4.3
traitlets==4.3.2
Twisted==17.1.0
tzlocal==1.4
uritemplate==3.0.0
virtualenv==15.1.0
virtualenv-clone==0.2.6
virtualenvwrapper==4.7.2
w3lib==1.17.0
wcwidth==0.1.7
webencodings==0.5
Werkzeug==0.11.15
Whoosh==2.7.4
widgetsnbextension==2.0.0
xarray==0.8.2
xlrd==1.0.0
xlwt==1.2.0
zope.interface==4.3.3
```

Many thanks