title: Mac App Store claims newer version of my app is already installed
body: <p>I'm trying to install my app from the Mac App Store now that it's been published. I'm using the same machine as the one I developed the app one. For some reason, the App Store claims "A newer version of this app is already installed on this computer." I haven't touched the version number since I submitted it so this is strange.</p>
  
  <p>I've removed all references of the app from Applications, Library/Preferences, Library/Application Support, Library/Caches, /var, and Trash. I've also cleaned the Product from within Xcode.</p>
  
  <p>Any suggestions?</p>
  
  <p>Thanks!</p>