So, I'm on a different computer and still am having no luck.  I made a simple one file program as pasted below.  It finds the controller and executes the Get method, but still returns a 500.  The only common thing is that I pulled the bits down from Nuget...  Is it possible there is a nuget package problem?

 class Program
    {
        static void Main(string[] args)
        {
            var config = new HttpSelfHostConfiguration("http://localhost:8080");
            config.Routes.MapHttpRoute("hmmmm", "{controller}", new { controller = "Test" });
            using (var server = new HttpSelfHostServer(config))
            {
                server.OpenAsync().Wait();
 
 
                Console.WriteLine("Server running...");
                Console.ReadKey();
                server.CloseAsync().Wait();
            }
        }
    }
 
    public class TestController : ApiController
    {
        public string Get()
        {
            return "Hello, World";
        }
    }