title: The name "..." does not exist in the namespace "clr-namespace"
body: <p>I am having a weird problem with Visual Studio 2012, .NET 4.5 and WPF.</p>
  
  <p>Views wont find references to any of my clases and I keep receiving the error "The name "..." does not exist in the namespace "clr-namespace" "</p>
  
  <p>while intellisense do find any of my clases</p>
  
  <p>What I've tried:</p>
  
  <ul>
  <li>xmlns:common="clr-namespace:IVT.Common.View;assembly=IVT"</li>
  <li>xmlns:common="clr-namespace:IVT.Common.View;assembly="</li>
  <li>xmlns:common="clr-namespace:IVT.Common.View"</li>
  <li>Moving my classes to other namespaces</li>
  <li>I restarted visual studio and my computer</li>
  <li>Changed the .NET version and the compilation method (x86/x64)</li>
  <li>I created new projects and they have this problem now too... but old project still work... </li>
  </ul>
  
  <p>EVERY time intellisense would find classes but visual studio still throws that error...</p>
  
  <p>Any idea?</p>
  
  <p>Thanks.</p>