Hi, Quick tests on master, hitting /cgi-bin/koha/ oai.pl?verb=GetRecord&identifier=KOHA-OAI-TEST:1&metadataPrefix=marcxml 3.27 => OK 3.28 => OK 4.02 => KO cannot install via cpan make: *** No rule to make target 'bin/oai_pmh.pl', needed by 'blib/script/ oai_pmh.pl'. Stop. 4.03 => KO Can't call method "start_element" on an undefined value at /root/.cpanm/work/1517493937.13902/HTTP-OAI-4.03/blib/lib/HTTP/OAI/Verb.pm line 53. with --force: Can't locate object method "xslt" via package "HTTP::OAI::GetRecord" at /home/vagrant/kohaclone/Koha/OAI/Server/Repository.pm line 147. 4.04 to 4.06 => KO Can't locate object method "xslt" via package "HTTP::OAI::GetRecord" at /home/vagrant/kohaclone/Koha/OAI/Server/Repository.pm line 147. We use this xslt method since bug 15527 (OAI-PMH should have a stylesheet to aid usability). It has been removed from HTTP::OAI::Response 4.03 If I comment the line in our codebase ($response->xslt( "/opac-tmpl/xslt/OAI.xslt" ); in Koha::OAI::Server::Repository->new), with 4.06 I get: Can't call method "start_element" on an undefined value at /usr/local/share/perl/5.20.2/HTTP/OAI/Verb.pm line 55. Next? I do not know :) Cheers, Jonathan