Why do I get an error CS0310 when using MvxWpfSetup<Core.App> as RegisterSetupType

I try to build my first app with MvvmCross, found pretty good explanations in this video put I get error CS0310 when I setup the App.xaml.cs file the way it is shown in the video, as well as it is on the example page of the MvvmCross project page.

using MvvmCross.Core;
using MvvmCross.Platforms.Wpf.Core;
using MvvmCross.Platforms.Wpf.Views;

namespace MvxStarter.Wpf
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : MvxApplication
    {
        protected override void RegisterSetup()
        {
            this.RegisterSetupType<MvxWpfSetup<Core.App>>();
        }
    }
}

I am using MvvmCross.Platforms.Wpf in version 8.0.1 and the error message is:

Error   CS0310  'MvxWpfSetup<App>' must be a non-abstract type with a public parameterless 
constructor in order to use it as parameter 'TMvxSetup' in the generic type or method 
'MvxSetupExtensions.RegisterSetupType<TMvxSetup>(object, params Assembly[])'.

The core class library has .Net Core 5.0 as its target framework and the same goes for the WPF project.

Solution 1:

All the MvxSetup derivatives were marked abstract in MvvmCross 8.

You need to create your own Setup class:

public class Setup : MvxWpfSetup<App>
{
}

Then you can register that:

this.RegisterSetupType<Setup>();