This is odd, but there seems to be a few subjects on the web, but so far no resolution. I have lost iMovie from my 2010 iMac. I have OS X 10.8.2 installed, but iMovie has gone. I didn't use it before, but my daughter has now said she would like to try it. I looked for it, couldn't find it so opened the app store, and tried to install it. Then it tells me it's already installed, and I cannot get any further. I have looked in the apps folder, run spotlight, and still no joy. One site said to just reinstall from your iLife disc, but I dont have one, the computer came preinstalled. Can anyone tell me what I need to do to get it back?