This is a permissions error. Your web server does not have permission to create or write /var/lib/mailman/logs/error. Mailman's bin/check_perms -f run as root should fix this. In any case, the /usr/lib/cgi-bin/mailman/admin wrapper and all the others in that directory should be in Mailman's group ('list on Ubuntu) and be SETGID with permissions like -rwxr-sr-x, and the directory /var/lib/mailman and its subordinates should all be group 'list' and have permissions drwxrwsr-x. ** Changed in: mailman Status: New => Invalid ** Changed in: mailman Assignee: (unassigned) => Mark Sapiro (msapiro) -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1386602 Title: Mailman web interface fails after upgrade to 2.1.18-1 To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1386602/+subscriptions