Activation error on Business Trial

Hi,

I have a problem activating Xamarin.Android licence trial. Visual Studio 2012 Ultimate Rises this error on license activation:

System.Exception: Could not load machine data: error MT9019: Please contact support to receive an update. Thanks! en Xamarin.Components.Ide.Activation.ActivationService.GetErrorWorkflow(LicenseSyncResult[] results, Boolean ignoreSyncErrors) en Xamarin.Components.Ide.Activation.ActivationService.d__88.MoveNext() en Xamarin.Components.Ide.Activation.ActivationDialog.DisplayWorkflowStep(ActivationWorkflowStep step) en Xamarin.Components.Ide.Activation.ActivationDialog.<>c__DisplayClass13.b__12(Task t)

Any idea to solve it?

Thanks