RuntimeError when calling zmq.Context on a computer with a firewall

Hi,

I use pyzmq in one of my program and some users reported a RunTimeError when launching the software.
After investigation, I found that if I install COMODO firewall on the computer with the maximum security set, just by calling zmq.Context(), I have a crash.
Here is the trace:

Assertion failed: Permission denied (......\src\signaler.cpp:219)
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information

Is there a way to avoid this ? I have done the test on pyzmq-2.1.10.win32-py2.7 and pyzmq-2.1.7.

Of course, I reported the problem on the pyzmq bugtracker (https://github.com/zeromq/pyzmq/issues/152) and they asked me to put it her. I also asked for my users to disable their firewall (for test purpose), it worked for some of them but not for everybody.

Thanks in advance.