NuGet.Server returns 404 error

I have followed the instructions to setup and host my own NuGet feed. I am running the web application on a Windows 2012 (IIS 8.5) box.

I build and run the solution and get the default.aspx page...

Which says "You are running NuGet.Server v2.8.60318.667" and "Click here to view your packages".

When I click on the "here" link I get a "404 - File or directory not found." error.

I can successfully run a nuget.exe push command to put packages on the Nuget server; however I get a 404 error when attempting to run nugget.exe list command.
I have restarted IIS and the server
I have rebuilt the NuGet.Server web application from scratch.
I have tried hosting the NuGet.Server on a Windows 7 box with no success.

The Web.Config has the following entry

<modules runAllManagedModulesForAllRequests="true">

The web.config also has an entry to register the .nupkg extension as mimeType="application/zip"

It seems like the url routing is not working, but I can't seem to pin down what I am doing wrong. Something is preventing the odata feed from working.

I know there are great 3rd party implementations of NuGet server, but I would really like to just get the free one working and it seems like it should be so easy. Any thoughts or troubleshooting tips would be appreciated.

Solution

This answer expands the comment left on AndrewD's answer.

Like him, I started out with a VB project and I ended up in the same camp as OP. What worked for me however was converting all C# code into VB, within these two files.

Default.aspx
NuGetODataConfig.cs (replaced this one with a new file: NuGetODataConfig.vb)

For the sake of completion, I'm including the post-converted contents of these files below.

Default.aspx

<%@ Page Language="VB" %>
<%@ Import Namespace="NuGet.Server" %>
<%@ Import Namespace="NuGet.Server.App_Start" %>
<%@ Import Namespace="NuGet.Server.Infrastructure" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
    <title>NuGet Private Repository</title>
    <style>
        body { font-family: Calibri; }
    </style>
</head>
<body>
    <div>
        <h2>You are running NuGet.Server v<%= Gettype(NuGetODataConfig).Assembly.GetName().Version %></h2>
        <p>
            Click <a href="<%= VirtualPathUtility.ToAbsolute("~/nuget/Packages") %>">here</a> to view your packages.
        </p>
        <fieldset style="width:800px">
            <legend><strong>Repository URLs</strong></legend>
            In the package manager settings, add the following URL to the list of 
            Package Sources:
            <blockquote>
                <strong><%= Helpers.GetRepositoryUrl(Request.Url, Request.ApplicationPath) %></strong>
            </blockquote>
            <% if string.IsNullOrEmpty(ConfigurationManager.AppSettings("apiKey")) Then %>
            To enable pushing packages to this feed using the <a href="https://www.nuget.org/downloads">NuGet command line tool</a> (nuget.exe), set the <code>apiKey</code> appSetting in web.config.
            <% else  %>
            Use the command below to push packages to this feed using the <a href="https://www.nuget.org/downloads">NuGet command line tool</a> (nuget.exe).
            <blockquote>
                <strong>nuget.exe push {package file} {apikey} -Source <%= Helpers.GetPushUrl(Request.Url, Request.ApplicationPath) %></strong>
            </blockquote>
            <% end if %>
        </fieldset>

        <% if Request.IsLocal Then  %>
        <fieldset style="width:800px">
            <legend><strong>Adding packages</strong></legend>

            To add packages to the feed put package files (.nupkg files) in the folder
            <code><% = PackageUtility.PackagePhysicalPath %></code><br/><br/>

            Click <a href="<%= VirtualPathUtility.ToAbsolute("~/nuget/clear-cache") %>">here</a> to clear the package cache.
        </fieldset>
        <% End If %>
    </div>
</body>
</html>

NuGetODataConfig.vb

Imports System.Net.Http
Imports System.Web.Http
Imports System.Web.Http.ExceptionHandling
Imports System.Web.Http.Routing
Imports NuGet.Server
Imports NuGet.Server.Infrastructure
Imports NuGet.Server.V2

<Assembly: WebActivatorEx.PreApplicationStartMethod(GetType(MGINuGet.App_Start.NuGetODataConfig), "Start")>

Namespace MGINuGet.App_Start
    Public Module NuGetODataConfig
        Public Sub Start()
            ServiceResolver.SetServiceResolver(New DefaultServiceResolver())

            Dim config As HttpConfiguration = GlobalConfiguration.Configuration

            NuGetV2WebApiEnabler.UseNuGetV2WebApiFeed(config, "NuGetDefault", "nuget", "PackagesOData")

            config.Services.Replace(GetType(IExceptionLogger), New TraceExceptionLogger())

            Trace.Listeners.Add(New TextWriterTraceListener(System.Web.Hosting.HostingEnvironment.MapPath("~/NuGet.Server.log")))
            Trace.AutoFlush = True

            config.Routes.MapHttpRoute(name:="NuGetDefault_ClearCache",
                                       routeTemplate:="nuget/clear-cache",
                                       defaults:=New With {Key .controller = "PackagesOData", Key .action = "ClearCache"},
                                       constraints:=New With {Key .httpMethod = New HttpMethodConstraint(HttpMethod.Get)})
        End Sub
    End Module
End Namespace