Cannot delete scheduled recording of a show

How can I remove shows that are scheduled to record, but in the past?  I have shows scheduled to record on Dec 7.  I've tried clicking on the orange Rec icon and nothing happens, when I do the same for a show in the future, it turns grey.  I've also tried selecting Rec New and Rec All and still nothing happens with the old shows.

I resolved it by clearing the browsing history/cache.