Basically, when I choose a clip and click "import", nothing happens. Also, as you can see from the screenshot, there are several things missing, including the content library. My suspicion is, that I deleted some important iMovie software whilst cleaning up my Mac. I've tried completely uninstalling iMovie (every thread of it) and then reinstalling it, and it still looks the same as before. What should I do, and can it be fixed at all? I would greatly appreciate your help. Thanks! Macbook Pro, Mid 2014, OS X Yosemite.