I have the same problem. I have an ipad2, software was upgraded to ios6. Somehow, my keynote app couldn't reinstall. Eventhough I have bought the app. Everytime I click install, a checkbox pop saying that it can only be install with ios.5.1. How do I solve this problem? To date, I am still I'm the cloud coz I really need this app in performing my job during presentation. Please help.i search but couldn't get any resolution.