Dear All I am using koha 2.2.8 on windows xp. My users/students got error 500 when they try to login with their card number and password. Error message says: Server error! The server encountered an internal error and was unable to complete your request. Error message: Premature end of script headers: opac-user.pl If you think this is a server error, please contact the webmaster<webmaster@dummy-opac>. Error 500 opac 05/24/07 13:55:32 Apache/2.0.59 (Win32) I have noticed that the users having books issued got this error. In OPAC Error Log, I got the following error: [Thu May 24 13:40:52 2007] [error] [client 127.0.0.1] Premature end of script headers: opac-user.pl, referer: http://opac/cgi-bin/koha/opac-user.pl [Thu May 24 13:40:52 2007] [error] [client 127.0.0.1] HTML::Template->output() : fatal error in loop output : HTML::Template::param() : attempt to set parameter 'reserves' with an array ref - parameter is not a TMPL_LOOP! at C:/usr/site/lib/HTML/Template.pm line 3069, referer: http://opac/cgi-bin/koha/opac-user.pl [Thu May 24 13:40:52 2007] [error] [client 127.0.0.1] at C:/usr/koha228/opac/cgi-bin/koha/opac-user.pl line 158, referer: http://opac/cgi-bin/koha/opac-user.pl All other users got no error. Any idea? Thanks in anticipation Regards, Ata ur Rehman, Librarian, Akhter Hameed Khan Resource Center (AHKRC), NRSP-Institute of Rural Management, F-6/4, Islamabad Ph: +92 51 2822752 +92 51 2822792 http://www.irm.edu.pk/