Created attachment 3368 error popped up after selecting a session menu entry Hey, some menu items (suspend/hibernate, logout and shutdown/restart) give a popup message indicating there's an error (though it works fine). It might be consolekit-related though it happens for “logout” which I guess haven't anything consolekit related. See attached screenshot.
Note that when using the session button (the “logout” one, calling xfce4-session-logout), it doesn't happen.
Created attachment 3455 Proposed patch It seems there's a missing G_TYPE_INVALID in the dbus call for the panel plugin (there's one to end the input list, but the second one to end the output list is missing). The attached patch fixes the annoying error dialog for me.
Pushed to git master.