An exception of type 'System.ArgumentNullException' occurred in Xamarin.Forms.Platform.UAP.dll

[jhrendon40]

I get exception "An exception of type 'System.ArgumentNullException' occurred in Xamarin.Forms.Platform.UAP.dll but was not handled in user code
Additional information: Value cannot be null." in MainPage.xaml.cs. How this fix?

public sealed partial class MainPage : WindowsPage
{
public MainPage()
{
this.InitializeComponent();

        var start = Mvx.Resolve<MvvmCross.Core.ViewModels.IMvxAppStart>();
        start.Start();

        var presenter = Mvx.Resolve<IMvxViewPresenter>() as MvxFormsWindowsUWPPagePresenter;
        LoadApplication(presenter.MvxFormsApp);
}

[Cheesebaron]

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[jhrendon40]

I Find this, in the UWP with ARM plataform do not get this error. Any other (any cpu, x86) get the Exception.

In the Exaple002 chage UWP proyect to plataform to X86, and get this expeption.

[Cheesebaron]

What are you testing on? UWP/Windows 8.1 phones are only ARM. So I guess you are testing a desktop/tablet app in the appropriate sim?

[zuckerthoben]

I have the same issue. Using VS 2015 Community, SDK 10586.

I changed the MainPage from ContentPage to MasterDetailPage and provided the Master and Detail Markup:

 <MasterDetailPage.Master>
    <pages:EmployeeIndexPage>
    </pages:EmployeeIndexPage>
  </MasterDetailPage.Master>

  <MasterDetailPage.Detail>
    <NavigationPage>
      <Label>Detail Label</Label>
    </NavigationPage>
  </MasterDetailPage.Detail>
</MasterDetailPage>

The MasterPage implements the Title Property. I followed this site: https://developer.xamarin.com/guides/xamarin-forms/user-interface/navigation/master-detail-page/

[joagwa]

@zuckerthoben are your Viewmodels in a separate project to your Views?