Caliburn.Micro for Win 8.1 should use the new behavior SDK that is part of VS2013 instead of Windows.UI.Interactivity.
Also because ActionMessage won’t have AssociatedObject from the SDK we need to populate it. With conventions and Message.Attach this isn’t a problem as we can populate it as part of creating the behaviours. However if the developer is using the
full behaviour syntax (usually when they want to use a custom trigger). It also means if they are using any custom triggers and the like then they would need to be rebuilt to support the new SDK.