Hi, I have started all over again, and hope someone can help out this time. I successfully installed koha 3.0.4-fixed (no ldap, nozebra) Then: - I imported my older 2.2.8 database into mysql - Adjusted /etc/koha-conf.xml to connect to the old database - Ran the installer/data/mysql/update22to30.pl - Opened the :8080 web interface, where I arrived at step three of the installer: update the database from 3.00.00.001 to version 3.00.04.019. This succeeded, but here I received the following 8 errors: * [Thu Dec 10 16:08:07 2009] updatedatabase.pl: DBD::mysql::db do failed: Duplicate entry 'DebugLevel' for key 1 at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 107. * [Thu Dec 10 16:08:07 2009] updatedatabase.pl: DBD::mysql::db do failed: Table 'tags' already exists at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 114. * [Thu Dec 10 16:08:09 2009] updatedatabase.pl: DBD::mysql::db do failed: Duplicate entry '000493' for key 2 at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 284. * [Thu Dec 10 16:08:13 2009] updatedatabase.pl: DBD::mysql::db do failed: Duplicate entry 'minPasswordLength' for key 1 at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 730. * [Thu Dec 10 16:08:13 2009] updatedatabase.pl: DBD::mysql::db do failed: Duplicate entry 'uppercasesurnames' for key 1 at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 811. * [Thu Dec 10 16:08:15 2009] updatedatabase.pl: DBD::mysql::db do failed: Can't create table './merit/printers_profile.frm' (errno: 150) at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 1006. * [Thu Dec 10 16:08:16 2009] updatedatabase.pl: DBD::mysql::db do failed: Unknown column 'printingtype' in 'labels_conf' at /usr/share/koha/intranet/cgi-bin/installer/data/mysql/updatedatabase.pl line 1326. * [Thu Dec 10 16:08:16 2009] updatedatabase.pl: ERROR 1452 (23000) at line 1: Cannot add or update a child row: a foreign key constraint fails (`merit/message_transports`, CONSTRAINT `message_transports_ibfk_3` FOREIGN KEY (`letter_module`, `letter_code`) REFERENCES `letter` (`module`, `code`) ON DELETE CASCADE ON UPDATE CASCADE) I'm guessing that these errors are serious, because certain things don't function anymore, specifically: the 'Patrons' menu under 'Administration', 'Global system preferences' gives "production mode - trapped fatal error". In my apache error log, I see: [Thu Dec 10 16:26:26 2009] [error] [client 192.87.143.125] [Thu Dec 10 16:26:26 2009] systempreferences.pl: The given value does not seem to be interpretable as a Boolean value at /usr/share/koha/lib/C4/Boolean.pm line 102., referer: http://192.87.143.104:8080/cgi-bin/koha/admin/systempreferences.pl Any suggestions how to fix this..? Regards, Mourik Jan