So I am using the latest update to iMovie in Mavericks. I was close to an expert in iMovie '09, but iMovie 10 is a bit puzzling to me. Big question: Right from the start, I've had an event in my new iMovie Library labeled "2013-10-23". There is nothing in the event and it cannot be deleted even though ctrl+click provides an option to delete it. What is this and how do I get rid of it? ---------- Update: Just viewed package contents in my iMovie Library and removed a file labeled "CurrentVersion.flexolibrary". That removed that date under my iMovie Library listing in the iMovie interface. Any idea what this file is and why it was created in the first place?