Please attach Yast logs, see https://en.opensuse.org/openSUSE:Report_a_YaST_bug If not possible, switch to console or open new terminal in installation. Open Yast log with `less /var/log/YaST2/y2log`, go to the end of the file with [End] and try to take a picture of the log with your phone, camera, etc. and attach the picture. It should contain a backtrace of the error. You have to do this right after you get the error (before clicking OK). Thanks.