So I reinstalled OS X Mavericks on my Mac mini yesterday, and I even made a copy (?) of everything with Time-Machine.
Before the installation my external hard disk was being stupid and only showed me the Time-Machine copy of my MacBook Air and not the one I needed.. That made me reinstall OS X Mavericks because there is no other option, but when I started my Mac mini 'for the first time' (after the reinstallation) I saw iMovie and iPhoto where missing, so I went to the App Store and searched for iMovie first. It just gave me the iMovie page but instead of showing a download button it showed me a button that said 'Accept', so I clicked that and then a pop-up said 'Log in with your Apple-ID to accept all available apps'. I did that but nothing happened? So I went to the Apple iMovie site and opened the App Store via the button 'iMovie -> Open in App Store (to download)' and again that 'Accept' button... The exact same thing happened with iPhoto. Now I'm stuck and I don't know what to do.. I need iMovie tomorrow for an English project which I have to start all over again because my Time-Machine save/copy was gone... Please help me!
Mac mini, OS X Mavericks (10.9), imovie, gone, after, update,
Had the same problem with iPhoto and iMovie. Try going to the purchases tab in the app store. You should see them there with an install button beside it. Go ahead and click and it should start installing.