title: Xcode 4 - Error Starting Executable
body: <p>I've been working on a project in Xcode 3.2.5 and today I tried migrating it up to Xcode 4.0. It compiles just fine; I can navigate to and execute the .app without a hitch (as expected). The only thing that is screwy is the fact that Xcode cannot launch the application, and displays the following error when it tries:</p>
  
  <p>"Error starting executable. No executable file specified. Use the "file" or "exec-file" command" (image not available)</p>
  
  <p>I've scoured the Project and Xcode settings and have been googling for half the day, but all I can find are dead ends and people bashing other people about breaking Apple NDA. FYI Xcode 4 has been released, and is no longer under NDA.</p>
  
  <p>Should I just start a new project and copy in my source? Sounds wrong to me, but brute force works when brute force works.</p>
  
  <p>Thanks in advance</p>