title: IncrediBuild - Error: First character of string should be '0' or '1'
body: <p>Update: This issue is in a C++ (non-cli) project.  Unfortunately, there is no error info other than what was presented to me via the IDE. I was required to upgrade my IDE from VS2017 to VS2019; when importing a project from VS2017 everything was fine until I tried to do a build. I received the following error/build failure from IncrediBuild: </p>
  
  <pre><code>   Microsoft Visual Studio 2019 Version 16.6.0.
     Copyright (C) Microsoft Corp. All rights reserved.
     1&gt;------ Build started: Project: XXXXX, Configuration: Debug x64 ------
     1&gt;First character of string should be '0' or '1'.
     1&gt;Error: First character of string should be '0' or '1'.
     ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
  </code></pre>
  
  <p>I've never encountered a build error like this and have searched for an answer and not found one.  Any help would be greatly appreciated.</p>