Anytime I try to edit a repeating event in my calendar I get an alert: "Edit event Change all events in the series". That alert used to show a circle with a green dot in it (as though selected) that I could not deselect. Now there is no circle or green dot, just the alert. So, when ever I want to change just one instance of a repeating event I have to go to my computer to make the change. By the way, I sync my calendar--and contacts--with iCloud using SmoothSync.