[Zope] Zope.cgi error

I am trying to get Zope.cgi working (Apache 1.3.4) per the Zope source instructions. When I try to access http://somedomain/cgi-bin/Zope.cgi/manage I get the following error in the http-error log: httpd: [Wed Mar 31 14:52:45 1999] [error] [client 168.240.152.202] Premature end of script headers: /usr/local/www/cgi-bin/Zope.cgi Does anybody know what this means?? TIA, Daren