Trying to use Monkey Robotics to communicate with my SensorTag™ but StartScanningForDevices fails

Hello,

I am trying to use Monkey Robotics to get all the BLE devices but I simply can't start a scan to receive a list of all the devices. Even the examples provided by Monkey Robotics fails. Maybe it has something to do with my VM android phone not enabling bluetooth? I haven't tested iphone. My VS debugger open up asking for the destination of a 'SyncContext.cs' file. Afterwards it ends with a null pointer. This is my code

CORE

private IAdapter adapter;

        public TestPage(IAdapter adapter)
        {
            InitializeComponent();

            this.adapter = adapter;
        }

        public void ScanDevices(object senderr, EventArgs es)
        {
            adapter.DeviceDiscovered += (sender, e) =>
            {
                if (e.Device.Name != null)
                {

                }
            };

            adapter.ScanTimeoutElapsed += (sender, e) =>
            {
                adapter.StopScanningForDevices();

            };

            if (adapter.IsScanning) // stop with previous scans
            {
                adapter.StopScanningForDevices();
            }

            adapter.StartScanningForDevices(Guid.Empty);
        }

ANDROID

 protected override void OnCreate(Bundle bundle)
        {
            TabLayoutResource = Resource.Layout.Tabbar;
            ToolbarResource = Resource.Layout.Toolbar;

            base.OnCreate(bundle);

            global::Xamarin.Forms.Forms.Init(this, bundle);
            SetAdapter();

            LoadApplication(new App());
        }

        void SetAdapter()
        {
            var adapter = new Robotics.Mobile.Core.Bluetooth.LE.Adapter();
            App.SetAdapter(adapter);
        }