title: Error "The OutputPath property is not set for project" VS 2015
body: <p>I have multiple projects in visual studio 2015. I am running my project in "ANY CPU" in debug mode. when I am trying to Run my project, I get the following error:</p>
  
  <blockquote>
    <p>The OutputPath property is not set for project '.csproj'.   Please
    check to make sure that you have specified a valid combination
    of Configuration and Platform for this project.  Configuration='Debug'
    Platform='x64'.<br>
    This error may also appear if some other project is
    trying to follow a project-to-project reference to this project, this
    project has been unloaded or is not included in the solution, and the
    referencing project does not build using the same or an equivalent
    Configuration or Platform.    C:\Program Files
    (x86)\MSBuild\14.0\bin\Microsoft.Common.CurrentVersion.targets</p>
  </blockquote>