[zeromq-dev] IPython-notebook 2.x.x crashing on Windows with ZMQ error

[gary ruben]

Hi,

I'm cross-posting here via the ipython-user and Continuum's Anaconda Python
community help group because I haven't had any luck there with homing in on
a solution to my problem. Hopefully someone here can help.

Since IPython 2.x.x I haven't been able to run IPython notebook on my work
machine without it crashing. My work machine is running Windows7 Enterprise
64 bit. At home I'm running Anaconda Python 64 bit in Windows7 Pro 64 bit
with no such problem. Therefore it's probably a configuration problem, but
I'm not sure. IPython 1.1.x works fine on all machines and is based on
pyzmq-2.2.0.1. IPython changed to pyzmq-14.3.0 for IPython 2.x.x.

The IPython notebook server starts up OK but crashes when I try to load a
notebook. In the traceback there is an error

windows ZMQError: Permission denied

Here is the full traceback
http://pastebin.com/r0wkdySG

The only thing I could find via online searches that seems remotely related
is this issue with ZMQ:
https://code.google.com/p/winpython/issues/detail?id=49

The proposed solution according to a couple of threads I've found online is
to add a loopback address exception to the Windows firewall, but this
hasn't solved the problem for me (although I may have done this
incorrectly). Also, I don't have to do that on my home machine, which is
also running Windows firewall.

Any suggestions about whether this is a ZMQ problem, and if so what I can
try to help diagnose this?

thanks,
Gary
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