Me too, same problem with a lot of themes, with the following message:
(gnome-appearance-properties:9626): Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_set_text()
(gnome-appearance-properties:9626): Pango-WARNING **: shaping failure, expect ugly output. shape-engine='BasicEngineFc', font='DejaVu Sans Bold 11.9990234375', text='' Segmentation fault
I am installing themes just copy/paste theme folder in /home/"user"/.icons
Me too, same problem with a lot of themes, with the following message:
(gnome- appearance- properties: 9626): Pango-WARNING **: Invalid UTF-8 string passed to pango_layout_ set_text( )
(gnome- appearance- properties: 9626): Pango-WARNING **: shaping failure, expect ugly output. shape-engine= 'BasicEngineFc' , font='DejaVu Sans Bold 11.9990234375', text=''
Segmentation fault
I am installing themes just copy/paste theme folder in /home/"user"/.icons