title: xamarin.android App signing does not work
body: <p>So im trying to publish my new android app to the Google PlayStore. From reading <a href="http://docs.xamarin.com/guides/android/deployment,_testing,_and_metrics/publishing_an_application/part_1_-_preparing_an_application_for_release" rel="nofollow">this</a> tutorial I understand that I have to sign my app before releasing it to the PlayStore. I did exactly the same as in the tutorial. After uploading it to the PlayStore I tried to install the App on my device. I got the message "Package file was not signed correctly". This is strage.. In xamaran studio I get the message "Package succesfully signed".</p>
  
  <p>If I try to install the App from the apk on the device I get the message "Unable to install"</p>
  
  <p>What could be wrong here?</p>
  
  <p>Im using Xamarin Studion on a Mac.</p>