title: Upgrading Silverlight 4 to 5 issues - Blend libraries?
body: <p>I'm upgrading project from SL 4 to 5 and having some difficulties. See screenshot:</p>
  
  <p><img src="https://i.stack.imgur.com/xYKXX.jpg" alt="enter image description here"></p>
  
  <p>Microsoft.Expression.Interactions and System.Windows.Interactivity both parts of Blend 4 I beleive. Where do I find proper counterparts that I can use?</p>