title: Property 'xxx' not found on object of type 'yyy'
body: <p>I upgraded to xcode 4.0 and am now getting this error when I compile:</p>
  
  <p>"Property 'xxx' not found on object of type 'yyy'"</p>
  
  <p>where xxx is a property and yyy is my delegate.</p>
  
  <p>I'm trying to set the property xxx on the delegate object as follows:</p>
  
  <pre><code>self.delegate.xxx=@"abc"
  </code></pre>
  
  <p>Does anyone know why this would not be working now with xcode 4.0?  It was fine with xcode 3.x.</p>
  
  <p>I'm also getting this compile error:</p>
  
  <p>"Expression is no assignable - type of receiver is unknown"</p>