in the Beginners Guide p 77 ff a class [italic]FEZ_Components[/italic] is used. It should be contained in GSIElectronics.NETMF.FEZ. But in 4.1 it is not. Even in the [italic]Namespace documentation[/italic] FEZ is missing.
btw your url-decoration in this forum is unable to make a link with a hidden URL