title: Getting "Missing SDK in target picChoice: iphoneos4.0" error when building a test release of my app in Xcode 4, pvw 5
body: <p>I have opened a functioning Xcode 3x project in Xcode 4.0 pvw 5 and am getting the following error whei I try to build a debug version of the app: "Missing SDK in target picChoice: iphoneos4.0"</p>
  
  <p>I am trying to find where and how to remedy this, and I am coming up with bupkus.</p>
  
  <p>I apologize if this is not very clear, but I am rather flummoxed by Xcode 4 so far....</p>