For crashing ubuntu tweak

ubuntu tweak isnt working showing this type of message
i just install gnome 3.8 and then happend it,
(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:127:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:127:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:131:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:132:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:133:24: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:134:26: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:139:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:140:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:141:24: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:142:26: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:883:19: ‘inset’ is not a valid property name

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:903:19: ‘inset’ is not a valid property name

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:923:19: ‘inset’ is not a valid property name

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:942:19: ‘inset’ is not a valid property name

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:987:19: ‘inset’ is not a valid property name

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1115:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1296:21: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1380:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1810:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1811:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1818:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1819:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2054:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2055:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2124:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:2125:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gnome-applications.css:138:21: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gnome-applications.css:175:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gnome-applications.css:209:18: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: gnome-applications.css:209:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: granite-widgets.css:190:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: granite-widgets.css:226:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: granite-widgets.css:393:20: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:18:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:19:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:20:24: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:21:26: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:38:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:39:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:40:24: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:41:26: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:57:23: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:58:25: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:59:24: Not using units is deprecated. Assuming ‘px’.

(ubuntu-tweak:499): Gtk-WARNING **: Theme parsing error: lightdm-gtk-greeter.css:60:26: Not using units is deprecated. Assuming ‘px’.
compizconfig - Info: Backend : ini
compizconfig - Info: Integration : true
compizconfig - Info: Profile : default
Fontconfig warning: “/etc/fonts/conf.d/50-user.conf”, line 14: reading configurations from ~/.fonts.conf is deprecated.

(ubuntu-tweak:499): Gtk-ERROR **: GtkBox child GtkTreeView minimum width: -1 < 0 for height 364

Hey please use quote or code for the sake of an better overview :slight_smile:
The only relevant message is

All the above are warnings.

It seems to be either an Ubuntu Tweak issue not being compatible with GTK but I doubt it a little bit. So it might be a problem with your installed gnome 3.8 gtk apps. Are you using a seperate PPA ?