Hello, Seems that zope\app\container\_zope_proxy_proxy.c cannot be compiled with MS compilers. With python 2.4.5, 2.4.4 and 2.4.3 on winXP. eeeeeek, fails on linux too (debian etch+python 2.4.4)... I'm not a C guru, with a help from a friend we figured that the problem is the Py_ssize_t, which is available in python 2.5. A workaround could be adding #if PY_VERSION_HEX < 0x02050000 && !defined(PY_SSIZE_T_MIN) typedef int Py_ssize_t; #define PY_SSIZE_T_MAX INT_MAX #define PY_SSIZE_T_MIN INT_MIN #endif as proposed by http://www.python.org/dev/peps/pep-0353/ Strange, that there is a zope.app.container-3.5.6-py2.4-win32.egg on pypi. -- Best regards, Adam GROSZER mailto:agroszer@gmail.com -- Quote of the day: A handful of friends is worth more than a wagon of gold.