I have reported this upstream with a patch at: https://bugzilla.gnome.org/show_bug.cgi?id=664167
As a workaround, you can rename vala.devhelp2 in /usr/share/devhelp/books/vala-0.14 to vala-0.14.devhelp2 ** Bug watch added: GNOME Bug Tracker #664167 https://bugzilla.gnome.org/show_bug.cgi?id=664167 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/890723 Title: vala-0.14-doc devhelp book not loading To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/vala-0.14/+bug/890723/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs