title: Xamarin Incompatible target framework error - can NuGet help me?
body: <p>I am coding a Xamarin application and I wish to add the MonoDroidToolkit as a project to my current solution. I have done this correctly, and my solution builds.</p>
  
  <p>I now need to add a reference in my application to the MonoDroidToolkit project.</p>
  
  <p>I have selected the "Edit References" option in the References folder. I then browse to the projects tab to select the project. The project is listed there, however I cannot select the project because of this description:</p>
  
  <blockquote>
    <p>com.refractored.monodroidtoolkit (incompatible target framework:
    MonoAndroid, Version=v4.2)</p>
  </blockquote>
  
  <p>Here is an screenshot of the description:
  <img src="https://i.stack.imgur.com/zQNs3.png" alt="com.refractored.monodroidtoolkit (incompatible target framework: MonoAndroid, Version=v4.2)"></p>
  
  <p>I have changed the target framework of each project to be the same and also to be automatic, however, no matter what target framework I select, I cannot add the reference because of the above description.</p>
  
  <p>I have done a check on the Mono.Android reference in each of my projects. In my current project, the description is version 4.1 Support and the MonoDroidToolkit is version 4.2 support.</p>
  
  <p>Is this that the problem is? How can I easily update the 4.1 Support reference to be the latest? Can I get NuGet to do this, or is there another way to update all my references?</p>