As it says in the upstream bug report, this is a Mono bug, not a KeePass bug.
https://bugzilla.xamarin.com/show_bug.cgi?id=3099 https://bugzilla.xamarin.com/show_bug.cgi?id=17359 ** Bug watch added: bugzilla.xamarin.com/ #3099 http://bugzilla.xamarin.com/show_bug.cgi?id=3099 ** Bug watch added: bugzilla.xamarin.com/ #17359 http://bugzilla.xamarin.com/show_bug.cgi?id=17359 ** Changed in: keepass2 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1587174 Title: unhandled ArgumentException on exit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/keepass2/+bug/1587174/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs