GUI build nopes out upon boot

[modusc896d352]

when starting-up Cpp2IL.Gui.exe, this is how it boots up

tarting Cpp2IL GUI. Initializing Cpp2IL Core...
[Info] [GUI] Starting Avalonia...
[Info] [GUI] Loading XAML...
Unhandled exception. System.MethodAccessException: Attempt to access the method failed.
   at Cpp2IL.Gui.App.!XamlIlPopulate(IServiceProvider, App)
   at Cpp2IL.Gui.App.!XamlIlPopulateTrampoline(App)
   at Cpp2IL.Gui.App.Initialize()
   at Avalonia.AppBuilder.Setup() in /_/src/Avalonia.Controls/AppBuilder.cs:line 248
   at Avalonia.AppBuilder.SetupWithLifetime(IApplicationLifetime) in /_/src/Avalonia.Controls/AppBuilder.cs:line 160
   at Avalonia.ClassicDesktopStyleApplicationLifetimeExtensions.StartWithClassicDesktopLifetime(AppBuilder, String[], ShutdownMode ) in /_/src/Avalonia.Controls/ApplicationLifetimes/ClassicDesktopStyleApplicationLifetime.cs:line 211
   at Cpp2IL.Gui.Program.Main(String[])

"unhandled exception" message before the app self-destructs