Hello, Im running Zope 2.7.0 on Fedora Core 2 (Upgraded from Core 1 to Core 2 after installing Zope 2.7.0. Now I want to upgrade to Zope 2.7.1. ./configure --prefix=/usr/local/zope/2.7.1/ No problems. make Now I get the following error : Traceback (most recent call last): File "/usr/local/zope/Zope-2.7.1-0/setup.py", line 1091, in ? distclass=ZopeDistribution, File "/usr/local/lib/python2.3/distutils/core.py", line 149, in setup dist.run_commands() File "/usr/local/lib/python2.3/distutils/dist.py", line 907, in run_commands self.run_command(cmd) File "/usr/local/lib/python2.3/distutils/dist.py", line 927, in run_command cmd_obj.run() File "/usr/local/lib/python2.3/distutils/command/build.py", line 107, in run self.run_command(cmd_name) File "/usr/local/lib/python2.3/distutils/cmd.py", line 333, in run_command self.distribution.run_command(command) File "/usr/local/lib/python2.3/distutils/dist.py", line 927, in run_command cmd_obj.run() File "/usr/local/lib/python2.3/distutils/command/build_ext.py", line 244, in run customize_compiler(self.compiler) File "/usr/local/lib/python2.3/distutils/sysconfig.py", line 159, in customize_compiler cpp = cc + " -E" # not always TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' make: *** [build] Error 1 What is wrong ??? Greetings, Martin Koekenberg