Error with Oak and Nancy Insert

gistfile1.txt

    public class Bootstrapper : DefaultNancyBootstrapper
    {
        protected override void ConfigureApplicationContainer(TinyIoCContainer container)
        {
            container.Register(new Customers());
        }
    }

    public class Customers : DynamicRepository
    {
    }

    public class CustomerModule : ApiModule
    {
        public CustomerModule(Customers customers)
            : base("/customers")
        {
            // This is fine, returns data
            Get["/"] = _ => customers.All();

            // Returns error: Can't parse this object to the database - there are no properties set
            Post["/"] = _ =>
            {
                var c = this.Bind();
                return customers.Insert(c);
            };
        }
    }