But as a workaround, add MimeType=x-scheme-handler/ghelp; to the end of your /usr/share/applications/yelp.desktop I don't run ubuntu but this should possibly help you.
-- Cannot open Help from Appearance preferences https://bugs.launchpad.net/bugs/673362 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to yelp in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs