When opening iMovie '11, it loads the Event Library, but shows 0 projects in the Project Library, even though I have created several Projects. I cannot open any existing iMovie projects from their folders (using right-click Open With...) and I cannot even begin a new project. I can see the events in my Events Library and even import new movies, but I cannot play them in the viewer. I cannot drag any of the events to the Project Library either. I haven't moved any of the files or their folders, nor have I renamed any of the files or folders. All the project and event files are in their default locations that were created by iMovie. I uninstalled and reinstalled iMovie but it made no difference? Everything was working fine until I had to restart my iMac after recent automatic updates were applied. I'm stuck.