Why can't I launch a WPF app written in F#? - wpf

Question

I receive the following warning when attempting to build a WPF app written in F#:
Main module of program is empty: nothing will happen when it is run
As a result, I am unable to launch the application.
I have verified that all AssemblyInfo.fs files has a "do()" at the end.
I have played around with the order of files as well.
Any suggestions?
UPDATE
I Added a file to the end of my project.
The file has the following code:
module Bootstrap
open System.Windows
[<EntryPoint>]
let main args =
System.Windows.Application.Current.Run() |> ignore;
// Return 0. This indicates success.
0
When I attempt to run the file though, I hit a null reference exception on Application.Current.
My solution looks like this:

Answer 1

Here's a minimal working example, using FSharp.ViewModule.Core and FsXaml.Wpf packages:
MainWindow.xaml:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:local="clr-namespace:ViewModel;assembly=fsxamltest">
<Window.DataContext>
<local:MainViewModel/>
</Window.DataContext>
</Window>
ViewModel.fs:
namespace ViewModel
open FSharp.ViewModule
type MainViewModel() as me = inherit ViewModelBase()
App.fs:
open System
type App = FsXaml.XAML<"App.xaml">
[<STAThread;EntryPoint>]
let main _ = App().Root.Run()
App.xaml:
<Application
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml"/>
If that doesn't work, please show us the full code or create MCVE.