Hi, I have a problem with getting Koha to work. I have installed all the perl scripts and when I start the browser the Welcome to Koha message appears and then I get HTTP 500 Internal Server Error. Apache Access log: X.X.X.X - - [07/Feb/2008:07:51:19 +0200] "GET / HTTP/1.0" 200 550 "-" "Microsoft BITS/6.6" Opac-error_log: [Thu Feb 07 08:06:36 2008] [error] [client x.x.x.x] Can't locate C4/Interface/CGI/Output.pm in @INC (@INC contains: /usr/lib/perl5/5.8.8/i586-linux-thread-multi /usr/lib/perl5/5.8.8 /usr/lib/perl5/site_perl/5.8.8/i586-linux-thread-multi /usr/lib/perl5/site_perl/5.8.8 /usr/lib/perl5/site_perl /usr/lib/perl5/vendor_perl/5.8.8/i586-linux-thread-multi /usr/lib/perl5/vendor_perl/5.8.8 /usr/lib/perl5/vendor_perl .) at /usr/lib/perl5/site_perl/5.8.8/C4/Auth.pm line 29. [Thu Feb 07 08:06:36 2008] [error] [client x.x.x.x] BEGIN failed--compilation aborted at /usr/lib/perl5/site_perl/5.8.8/C4/Auth.pm line 29. [Thu Feb 07 08:06:36 2008] [error] [client x.x.x.x] Compilation failed in require at /usr/local/koha/opac/cgi-bin/opac-main.pl line 7. Please help ! PM