title: iOS Valid signing identity not found
body: <p>I see this questions comes up a lot, but no answers for me.  I have revoked the previous Development and Distribution Certificates and generated new ones.  I have downloaded both certificates and installed them by double-clicking.  In my Keychain Access I can see my certificates and they have a green circle with a check mark saying "This certificate is valid".</p>
  
  <p>Then I created my new Development and Distribution Provisioning Profiles and downloaded them.  They have a green button showing they are Active.  I drag the downloaded Provisioning Profiles over to my Xcode icon.  I open Xcode Organizer and click on LIBRARY --> Provisioning Profiles.  They are there with today's date on them but the status is "Valid signing identity not found"</p>
  
  <p>What's the missing step here?</p>