I got the same message about Zope.
I don't remember how I got past it.
I have Zope 4.0.5 in this location:
/Library/Python/2.7/site-packages/zope.interface-4.0.5-py2.7-macosx-10.8-intel.egg
I don't remember what an egg is though
I remember Google does.
Somehow I was able to install it.
Many hours of Googling ...
Perhaps upgrading Python 2.7 did it.
What version of Python is currently installed?
I remember a version is part of 10.8.5.
I have Python 2.7.5, OSX 10.9.2.
This is why I did not even try earlier, I figured it was going to be a big ball of hurt.
Do you have any other versions of Python in:
/Library/Python/
I have other folders with older Python versions but
only a readme file in the folder.
Perhaps move any older versions of Python somewhere else.
I sit in front of my Mac while in a recliner all day.
It took me MANY days and countless hours to get it going.
Good Luck!!!
Ken