Deploying app with brokered component in physical device

Question

I am developing an app using brokered components, using the Microsoft templates (https://visualstudiogallery.msdn.microsoft.com/527286e4-b06a-4234-adde-d313c9c3c23e) and following this step-by-step (http://blogs.u2u.be/diederik/post/2014/04/25/Building-Enterprise-apps-using-Brokered-Windows-Runtime-Components.aspx).

The reason of my problem is that I can execute/deploy the app without problems in local machine and in windows simulator, but when I deploy the app in a device it breaks with a TargetInvocationException

Description of the error:

Requested Windows Runtime type 'MyNamespace.PrintService' is not registered

I get the error in my ViewModelLocator, in the line of code of the getter of the ViewModel which uses the brokered component:

    public SettingsViewModel Settings
    {
        get { return ServiceLocator.Current.GetInstance<SettingsViewModel>(); }
    }

The ViewModelLocator is an standard MVVM Light view model locator.

Here is the source code of my SettingsViewModel where I inject the brokered component:

    public class SettingsViewModel
    {
        public SettingsViewModel(IPrintService printService)
        {
            if (printService == null)
                throw new ArgumentNullException("printService");

            _printService = printService;

            InitializeCommands();
            InitializeActions();
        }

        ...
    }