title: Failure Could not find file ...App.g.i.cs
body: <p>I'd like to stop this error appearing in the Intellisense section in the Output window in Visual Studio: 
  <strong>[Failure] Could not find file 'C:\code\CatApp\obj\x86\Debug\App.g.i.cs'.</strong></p>
  
  <p>I've cleared obj and bin folders, upgraded to the latest version of Visual Studio 2017,cleared all nuget packages and checked my project out from SVN again.</p>
  
  <p>I get the same problem if I create a new UWP project. (Every time I create a new UWP project, I have to get the Nuget package Microsoft.NETCore.UniversalWindowsPlatform separately. I'm wondering if the two problems could be related.)</p>
  
  <p>My target and min version are 16299.</p>