title: Problems after upgrading to Xcode 10: Build input file cannot be found
body: <p>I upgraded my Xcode SDK to version 10 last night and then find I cannot build. </p>
  
  <p>I'm getting this error:</p>
  
  <blockquote>
    <p>Build input file cannot be found:
    '/Users/call01/Library/Developer/Xcode/DerivedData/Comp-Lite-Apps-gytvmossqptokeafrddvvmnlzadk/Build/Products/Debug-iphoneos/SG11.app/SG11</p>
  </blockquote>
  
  <p>which did not exist before my upgrade and I'm tempted to revert back but would like to stick with version 10 if I can resolve this issue. </p>