I'm trying to add a pivot grid to my application and I haven't been able to get it to show up so I tried making a new project and used the radpivotgrid-getting-started code to see if it will work there but no luck. I have not altered your code in any way. When I run it, the grid shows up invisible or missing. I'm using .NET 4.5 and Silverlight 5. Let me know if you need more information.