Hi, I have just upgraded from 2.2.5 to 2.2.6 and struck a couple of problems which were reported for 2.2.6RC. The first one is the dreaded internal server error 500 when I try to go to (the list is not exhaustive, there are quite a few more pages that do it): 1. /cgi-bin/koha/opac-main.pl 2. /cgi-bin/koha/authorities/authorities-home.pl 3. /cgi-bin/koha/search.marc/search.pl?type=intranet SOLUTION: After installing Date::Calc it's all good. This means Date::Calc should be included in the list of prerequisite modules. The second one I had while upgrading (via koha.upgrade) DBD::mysql::st execute failed: Invalid default value for 'aqbudgetid' at scripts/updater/updatedatabase line 1705. DBD::mysql::st execute failed: Invalid default value for 'id' at scripts/updater/updatedatabase line 1705 I'm wondering if I can ignore that one. Thanks tomasz kotula