Hello, I did a new try to install Zope 2.7.2. But i'm getting a error with I can't explain. TypeError: unsupported operand type(s) for +: 'NoneType' and 'str' (This is the same error I get whem I want to install PIL.) This Is the way I installed Zope ./configure --prefix=/usr/local/zope/2.7.2 Make Then I get the following error line : running build_ext Traceback (most recent call last): File "/usr/local/zope/Zope-2.7.2-0/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 Where do I have to serach for the solution, Is it Zope, Python or a corrupted library ??? Whon can Help me ? Thanks, Martin Koekenberg