title: Unable to create UIBackgroundModes key in Info.plist for iOS4
body: <p>I have an audio application which works great for <code>iPhone 3.1.x</code> versions.</p>
  
  <p>I am trying to upgrade it to <strong>iOS4.0</strong> to work in multitasking environment. When I try to create a new <code>UIBackgroundModes</code> key in <code>info.plist</code>, it ("Required Background Modes") doesn't show up in drop down list?</p>
  
  <p>I also upgraded the Xcode SDK to 3.2.3, Base SDK to 4.0, deployment target to 4.0 but still <code>UIBackgroundModes</code> ("Required Background Modes") won't show up in <code>info.plist</code> drop down list.</p>
  
  <p>I also created test project for 4.0, and its info.list drop down list has "Required Background Modes".</p>
  
  <p>Did I miss something?</p>