Build Failure. Error: 'path' cannot be an empty string ("") or start with the null character : <p>I have a solution that builds fine in VS2015. I just installed VS2017 RTM and after conversion, attempts to build the solution fail immediately with the error:</p>

<blockquote>
  <p>Build Failure. Error: 'path' cannot be an empty string ("") or start with the null character.</p>
</blockquote>

<p>How can I get around this?</p>
