Uh Oh! For some reason WordPress could not create an events page for you (or you just deleted it). Not to worry though, all you have to do is create an empty page, name it whatever you want, and select it as your events page in your <a href="%s">settings page</a>. Sorry for the extra step! If you know what you are doing, you may have done this on purpose, if so <a href="%s">ignore this message</a>