Sometimes, when we are trying to see or change the design of the Medialooks Sample we can see the Form with a lot of Exceptions.
It's a Visual Studio issue and good news that it's easy to fix. We need just to rebuild this application with Any CPU configuration.
Open Configuration Manager and change the active solution platform.
Close the Form1(it's important), clean and rebuild the solution.
Now you can enjoy the creativity with the Medialooks Samples :)