Been having the same broblem
/usr/share/themes/Gray/gtk-2.0/gtkrc:35: error: invalid identifier `xthickness', expected valid identifier /usr/share/themes/IndustrialTango/gtk-2.0/gtkrc:29: error: invalid identifier `xthickness', expected valid identifier
Been having the same broblem
/usr/share/ themes/ Gray/gtk- 2.0/gtkrc: 35: error: invalid identifier `xthickness', expected valid identifier themes/ IndustrialTango /gtk-2. 0/gtkrc: 29: error: invalid identifier `xthickness', expected valid identifier
/usr/share/