NuGet Package Manager: 'AutoMapper' already has a dependency defined for 'Microsoft.CSharp'
<p>I'm trying to add AutoMapper as a dependency to a project using NuGet on Visual Studio Premium 2012, but it fails.</p>

<p>It says:  </p>

<blockquote>
  <p>Operation failed<br>
  'AutoMapper' already has a dependency defined for
  'Microsoft.CSharp'.</p>
</blockquote>

<p>I'm able to add other dependencies.</p>

<p>I'm using the last version of the package manager for VS 2012:</p>

<blockquote>
  <p>NuGet Package Manager   2.8.60318.667</p>
</blockquote>

<p>Any ideas what should I check?</p>