title: Invalid Toolchain. Itunes store operation failed
body: <p>As soon as I updated xcode to 9.2 , I cannot validate my archived builds. I get this error message every time:</p>
  
  <blockquote>
    <p>Invalid Toolchain. New apps and app updates must be built with the public (GM) versions of Xcode 6 or later, macOS, and iOS SDK or later. Don't submit apps built with beta software including beta macOS builds.</p>
  </blockquote>
  
  <p>Is this something wrong with Apple's new relase of xcode? Otherwise, I didn't change anything that would make this project using "Beta software".</p>