Comment 4 for bug 1313355

I have found a different fix and work around for this.

change the 2 lines of each shortcut in ~/.config/openbox/lubunturc.xml

<command> lxsession-default launcher_manager</command> to <command>lxsession-default launcher manager</command> with the space and then it works. Oh and run openbox --reconfigure to reload the configuration files for your new openbox configuration.

This also affects utopic. This way If you had something else working other than lxpanel as your launcher you could get the run to work.