title: Nuget package installation failure
body: <p>When trying to install a package from our newly created private Nuget Feed i get the following error.</p>
  
  <p>Could not install package 'GC.Timecode 1.0.0.3'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.5.1', but the package does not contain any assembly references or content files that are compatible with that framework. </p>
  
  <p>The Nuget package also targets 4.5.1. (Screenshot take from Nuget Package Explorer)</p>
  
  <p>The Nuget Package is created by Octopack via On premises TFS, and then published to a private Proget Server</p>
  
  <p><a href="https://i.stack.imgur.com/LkVqt.png" rel="noreferrer"><img src="https://i.stack.imgur.com/LkVqt.png" alt="enter image description here"></a></p>
  
  <p>Nuspec file looks like this</p>
  
  <pre><code>&lt;?xml version="1.0"?&gt;
  &lt;package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd"&gt;
  &lt;metadata&gt;
  &lt;id&gt;GC.Timecode&lt;/id&gt;
  &lt;version&gt;1.0.0.3&lt;/version&gt;
  &lt;authors&gt;user&lt;/authors&gt;
  &lt;owners&gt;user&lt;/owners&gt;
  &lt;licenseUrl&gt;http://example.com&lt;/licenseUrl&gt;
  &lt;projectUrl&gt;http://example.com&lt;/projectUrl&gt;
  &lt;requireLicenseAcceptance&gt;false&lt;/requireLicenseAcceptance&gt;
  &lt;description&gt;The GC.Timecode deployment package, built on 25/01/2016&lt;/description&gt;
  &lt;releaseNotes /&gt;
  &lt;/metadata&gt;
  &lt;/package&gt;
  </code></pre>
  
  <p>Contents of Package</p>
  
  <p><a href="https://i.stack.imgur.com/inD8q.png" rel="noreferrer"><img src="https://i.stack.imgur.com/inD8q.png" alt="enter image description here"></a></p>
  
  <p>What's going on here?</p>