Hi, I'm playing around with 2.2.6RC2 and am having a frustrating time with 500 Internal Server Errors. Using HTML::Template Ver 2.8 I can get opac-main.pl to load but not opac-search.pl. Using HTML::Template Ver 2.6 I have the opposite behaviour; I can get opac-search.pl but not opac-main.pl. This occurs with either Default or NPL themes. In both cases the log file contains only an error message like this and nothing else: [Tue Aug 22 21:47:23 2006] [error] [client 172.16.1.10] Premature end of script headers: /var/www/koha/opac/cgi-bin/opac-main.pl I went looking for a way to troubleshoot this problem and found this site: http://htmlfixit.com/cgi-tutes/tutorial_Common_Web_dev_error_messages_and_wh at_they_mean.php It says to add "use CGI::Carp qw(fatalsToBrowser);" just below the path to perl to send errors to the browser. And this is where it gets weird. As soon as I put that line in I no longer get errors and the page displays. I take it back out and the errors are back. Does anyone have advice on how to troubleshoot the source of 500 Internal Server Error errors? Does anyone maintain a list of MINIMUM versions of neccesary perl modules? The release notes has a few version numbers; are they minimum requirements or just what it was developed on? Thanks, Mike D.