Error 500 "Internal Server Error" is most of the time related to either PHP errors or Apache crashes etc, usually logged in PHP and Apache error logs.
I never use any more PHP as CGI, so I cannot say anything specifically to that. Quite likely that running as CGI Apache does not catch and log errors from the CGI that crashed. If possible try also PHP as Apache module. Another thing you could try is the debugging possibilities with PHP and gdb https://bugs.php.net/bugs-generating-backtrace.php Mapserver 6 had/has(?) some strange bugs in PHP Mapscript which can appear just under certain circumstances, more often with PHP 5.2 than 5.3 (I guess developers mainly used 5.3 for developments). If you can, please try to compile the SVN version of Mapserver 6 https://svn.osgeo.org/mapserver/branches/branch-6-0/mapserver/ It should have some backported bug fixes that prevented Mapscript to work properly in some cases. Maybe this solves your problems. Armin On 02/02/2012 15:06, Holt, Paul R SAJ Contractor wrote: > Classification: UNCLASSIFIED > Caveats: NONE > > I am in the process of upgrading our Pmapper installation from 3.x to 4.2. > > I have downloaded and installed version 4.2 along with the demo map data. I > am using php 5.2.17 and Mapserver 6.0.1. When I attempt to load the > map_default.phtml I receive and "Internal Server Error..." page. > The apache log reports "Premature end of script headers: php-cgi, referer: > http://sajgeo/projects/pmapper4/"; Unfortunately there is no other php, > mapserver, or pmapper debug or error info. > > When I switch to MapServer/Script 5.6 compiled against the same php version > the demo works fine. > > The Mapserver 6.0.1 installation works with other applications and I have > tested and used the demo map file in a simple php mapscript 6.0.1 application. > > Has anybody encountered this error? > > Classification: UNCLASSIFIED > Caveats: NONE > > > > ------------------------------------------------------------------------------ > Keep Your Developer Skills Current with LearnDevNow! > The most comprehensive online learning library for Microsoft developers > is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, > Metro Style Apps, more. Free future releases when you subscribe now! > http://p.sf.net/sfu/learndevnow-d2d > _______________________________________________ > pmapper-users mailing list > pmapper-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/pmapper-users > ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ pmapper-users mailing list pmapper-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pmapper-users
