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Michel Pelletier wrote As root, I typed "./install" Then "./start." File/"home/dckinder/download/Zope-2.0.0-linux2-x86/z2.py". line 494, in ? 18 Error: {Errno 131 Permission denied: '/home/dckinder/download/Zope-2.0.0-linux2-x86/var/Z2.pid'

This is such a commonly reported error that it's probably worth putting a specific check and nice diagnostic message in z2.py for it. Anthony