I have tested your fix and I still get this as the output but no Japanese install:
** (gnome-control-center.real:3528): WARNING **: Ignoring launcher gufw (missing desktop file)
** (gnome-control-center.real:3528): WARNING **: Ignoring launcher landscape-client-settings (missing desktop file)
** (gnome-control-center.real:3528): WARNING **: Ignoring launcher language-selector (missing desktop file)
** (gnome-control-center.real:3528): WARNING **: Ignoring launcher ubuntuone-installer (missing desktop file)
(gnome-control-center.real:3528): common-cc-panel-WARNING **: Language ja_JP.UTF-8 not installed, trying to intall it Segmentation fault (core dumped)
I have tested your fix and I still get this as the output but no Japanese install:
** (gnome- control- center. real:3528) : WARNING **: Ignoring launcher gufw (missing desktop file)
** (gnome- control- center. real:3528) : WARNING **: Ignoring launcher landscape- client- settings (missing desktop file)
** (gnome- control- center. real:3528) : WARNING **: Ignoring launcher language-selector (missing desktop file)
** (gnome- control- center. real:3528) : WARNING **: Ignoring launcher ubuntuone-installer (missing desktop file)
(gnome- control- center. real:3528) : common- cc-panel- WARNING **: Language ja_JP.UTF-8 not installed, trying to intall it
Segmentation fault (core dumped)