Question: I have installed the CRM 2011 SDK addin for visual studio 2012 (ultimate) and am trying to create a XAML Workflow Activity

I have added the CRM Workflow items to the toolbox using these instructions [Add Microsoft Dynamics CRM Workflow Activities to the Toolbox](http://msdn.microsoft.com/en-us/library/fb513e3f-3ed8-44fe-8d4c-e1a8aef29870#add_to_toolbox)

When I try and drop a Workflow on the design surface it say in red text "Could not generate view for Workflow"

Hovering over the text reveals a System.IOException that says "Cannot locate resource workflowdesigner.xaml"

How do I fix this?

Answer: 
I fixed this by dumping the contents of my CRM SDK bin directory (about 24 assemblies) into C:\Program Files (x86)\Microsoft Visual Studio 11.0\Common7\IDE\PublicAssemblies

Not elegant but obviously there was a dependency in there somewhere.
Also Visual Studio 2012 Update 2 fix this problem