"[Sun Aug 08 15:22:00 2004] [error] [client 127.0.0.1] Premature end of script headers: mapserv.exe" I have a similar error I reinstalled 4.2.2 over 4.0 and I got this error when I was trying to test the installation (http://127.0.0.1/cgi- bin/mapserv.exe)