title: Xcode iOS Base SDK Missing
body: <p>I have an old iOS app that I never distributed and am now trying to work on the project again.  It worked fine with an earlier version of Xcode but I was not ready to deploy it at that time.  Now I am using the current version of Xcode but I have an error that there is a missing base SDK.  I have explored every posting here with that error message and they did not work for me.</p>
  
  <p>On investigation in Xcode.  I can choose my app under "Project" pane.  With the Info tab chosen, it has under Deployment Target as "Mac OS X Deployment Target" and Default in the drop list.</p>
  
  <p>This is an iOS app and not a Mac OS X app.  How do I change this?</p>
  
  <p>I already have the base SDK as the Latest iOS.</p>
  
  <p>Suggestions?</p>