title: nuget package manager version issue VS 2013
body: <p>I am using VS 2013 and .Net 4.5/4.6. I am not getting this error message:</p>
  
  <pre><code>The 'System.Collections 4.0.10' package requires NuGet client version '3.0' or above, but the current NuGet version is '2.8.60723.765'.
  </code></pre>
  
  <p>My understanding is that this is due to a ddl that use a higher version of .Net. Just curious is there a way to fix this (e.g. determine the responsibel dll[s])?  </p>