Working on it...first of all i think i need to meet this requirement:
Xfce 4.10 requires Gtk+ 2.20 and Glib 2.24
Xfce 4.8 requires Gtk+ 2.14 and Glib 2.20
Xfce 4.6 requires Gtk+ 2.10 and Glib 2.12
because that i am on 13.37 which come with xfce 4.6, my Gtk+ and Glib not upgrade yet.
Looking for Gtk+ 2.20 and Glib 2.24 which packed for 13.37...can you advise where can i refer to? Thanks!
Edit: Is gtk-engine-2.20.2 is the same with gtk+ 2.20?
My laptop previously having installed: