Hi, I have created a project on Windows7 32 bit, Visual studio 2010, silverlight 4 Showcase template. But I want to develope project a new machine which Windows7 64 bit, Visual Studio 2010 silverlight4. When I open the project xaml file gives design error. And if I run the application "Error: The remote server returned an error: NotFound" message appears. If I clear DraggableWindow controls from design code, works fine. I mean the controls are not working. What should do?