Problems with Yast

Hi, recently i updated using “sudo zypper dup --no-allow-vendor-change”, then when it finished, i rebooted the system and then i tried to open Yast to install a software, but i cannot open it, anyone could help me, please :(?

Here is a capture:

Open a terminal window (gnome-terminal/konsole etc) and run; **xdg-su -c “yast2 sw_single”
Do you get any errors? It might be worthwhile to re-run dup too.