title: TestFlight iOS 8 - Error: An invalid app was specified for the install request
body: <p>I'm trying to use the new TestFlight on iOS 8 but I'm getting the following error: "An invalid app was specified for the install request" when the user (myself) taps on the Install button in the TestFlight app.</p>
  
  <p>I went through the configuration of the app in iTunesConnect, set up internal testers (including myself) and sent invitations. I then opened the invitation on my iPhone with iOS 8 GM ; the TestFligh app opened showing the invitation and the install button. This is where I see the error message when I tap Install.</p>
  
  <p>Has anyone been facing this issue?</p>
  
  <p>Thanks!</p>