Can't compile from Github source metahost.h missing again

I faced the same issue. What I did was to install some missing .NET Framework packages as described in this page:

https://blogs.msdn.microsoft.com/calvin_hsia/2017/02/13/cannot-open-include-file-metahost-h-no-such-file-or-directory/

Then I regenerate the solution with GenerateProjectFiles.bat -2017

After that, the compilation completed without issues and I was able to open the Editor