Unfortunately we haven't encountered this issue before and therefore we'll need your assistance in getting to the bottom of this. Do you think you can send over the solution where you experience these issues? Also, can you please confirm if you're using RadControls for WPF 2013.1.403. If you are, you can try and replace them with the Q2 2012 Beta version that was release last week.
Also, can you please make sure that you've referenced all assemblies required by the RadTileView
controls? You can find their list here
Also, there was an issue in VS2012 related to the usage of an alias in xaml that points to a namespace outside the schema (in our case outside http://schemas.telerik.com/2008/xaml/presentation
) namespace. This issue breaks the intellisense only while using such alias but it should work with everything else.