Make sure you enable installing apps not from the Google Play store. Somewhere in security settings you should be able to check "Allow installation from unknown sources"
i have the same problem i checked the security settings and i have them on and when it downloads its says "unconfirmed 563941.crdownload" i have no idea what this means and when i click on what would be the app in my files it says no app can perform this action would really appreciate the help
