I have a MacBook Air 1.86GHz Intel Core 2 Duo with 2Gb RAM, not the fastest portable I grant you. Previously I had Final Cut Pro X and Motion installed and running happily. Today I did a clean install of Mavericks and now the App Store will not allow me to download the software I purchased as I don't have 4Gb of RAM. I haven't used FCPX much but I do use Motion a lot. Anyone got any ideas as to how I can get at least Motion running on my Mac again?