FEZ Cream - The application called an interface that was marshalled for a different thread

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1

I am trying to create the mainboard object for FEZ Cream in a headless IoT app (no UI), but I’m getting a marshalling error.


    public sealed class StartupTask : IBackgroundTask
    {
        private BackgroundTaskDeferral Deferral;
        private FEZCream Mainboard;
        public void Run(IBackgroundTaskInstance taskInstance)
        {
            Deferral = taskInstance.GetDeferral();
            Setup();
            while (true) { }
        }

        private async void Setup()
        {
            try
            {
                Mainboard = await Module.CreateAsync<FEZCream>();
...
    }

System.Exception: The application called an interface that was marshalled for a different thread. (Exception from HRESULT: 0x8001010E (RPC_E_WRONG_THREAD))
at Windows.UI.Xaml.DispatcherTimer…ctor()

Is the FEZCream code not compatible with a headless app? I can go back and make it a UWP app with UI, but I plan on not having a display connected so it seemed a non-UI IoT project would be the right choice.

2

Well, I gave up and just switched it to a UWP app instead of an IoT app.