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Adding the Coverflow Control to a silverlight 4 application throws and error


I have updated my Visual Studio and Silverlight tools until today. When I create a silverlight application using silverlight 4 and add the CoverFlow control
to the page it throws the error :Error HRESULT E_FAIL has been returned from a call to a COM component.
I tried using Silverlight 3, and it does not throw any errors at all. I have also tried adding the System.Windows.Controls.Data.Input to the project reference
and import to the page with control xmlns:my="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input" .
Even after doing that it still throws the same error. Can you please suggest me what I should be doing ?