title: Visual Studio unable to recognise my MFC library for my webcam laser rangefinder code
body: <p>I tried copying the source code from the internet directly and I couldn't build/debug the whole file because of the error found below.</p>
  
  <p>Please Help</p>
  
  <pre><code>Error occurred while restoring NuGet packages: System.ArgumentException: The path is not                         of a legal form. at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength,Boolean expandShortPaths)
  at System.IO.Path.GetDirectoryName(String path)
  at NuGet.VisualStudio.VsUtility.GetNuGetSolutionFolder(Solution solution)
  at NuGet.VsEvents.PackageRestorer.UsingOldPackageRestore(Solution solution)
  at NuGet.VsEvents.PackageRestorer.BuildEvents_OnBuildBegin(vsBuildScope Scope,   vsBuildAction Action).
  
  
  1&gt;------ Build started: Project: LaserRange, Configuration: Debug Win32 ------
  1&gt;C:\Program Files   (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.CppBuild.targets(369,5): error MSB8031: Building an MFC project for a non-Unicode character set is deprecated. You must change the project property to Unicode or download an additional library. See http://go.microsoft.com/fwlink/p/?LinkId=286820 for more information.
  </code></pre>
  
  <p>========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========}</p>