title: How include Microsoft.Phone.Controls.LongListSelector on WP8?
body: <p>I have the application on the WP7 when I run it on the WP8 fails</p>
  
  <p><em>The type 'Microsoft.Phone.Controls.LongListSelector' exists in both 'e:..................\lib\Microsoft.Phone.Controls.Toolkit.dll' and 'c:\Program Files (x86)\Reference Assemblies\Microsoft\Framework\WindowsPhone\v8.0\Microsoft.Phone.dll'</em></p>
  
  <p>The Windows Phone Toolkit I set. Can anyone knows how to fix this error?    </p>