Solved.
I deleted the runcommand.sh file with "file manager" in
/opt/retropie/supplementary/runcommand/runcommand.shI changed the permission from 644 to 755 for
/home/pi/RetroPie-Setup/scriptmodules/supplementary/runcommand/runcommand.shThe second runcommand.sh in Home folder is changeable.
I went back in "RetroPie Setup" and run "update script" and now everything is fine. It copied from home folder to opt folder.
I got the files from joolswills
I don't know why it was set 644.