title: "Failed to set plugin placeholders" message?
body: <p>Xcode 9.1
  Simulator 10.0
  OSX 10.12.6</p>
  
  <p>I would like to upload a new build of my sticker pack to iTunes Connect. But Product > Archive is grayed out. So I ran the Simulator and got ""Failed to set plugin placeholders for (name)."</p>
  
  <p>Only one answer anywhere in the whole world -- delete Derived Data Folder. I did and got same error message.</p>
  
  <p>BTW Under General in Xcode the Version is 1. The build is 1.4. Does the build number have to be changed somewhere else as well?</p>