title: The target "GatherAllFilesToPublish" does not exist in the project
body: <p>I've checked that the same error occurred in the past with earlier vs .net versions but I am facing this issue in VS 2017 while trying to upgrade from VS Community 15.3.5 to 15.4.</p>
  
  <ul>
  <li>I first installed using the web installer by choosing the options, </li>
  <li>some how there were a couple of errors &amp; the download + installation took over 9+ hours </li>
  </ul>
  
  <p>visual studio was working and compiling project except that this had the problem 'The target "GatherAllFilesToPublish" does not exist in the project'.</p>
  
  <p>Then I tried downloading the entire setup using "vs_community.exe --layout "C:\MyFolder" --lang en-US" which again took over 9 hours to finish download. Re-ran the setup choosing Repair, again the same issue.</p>
  
  <p>Is any one aware of a quicker way to solve this above problem?</p>