Configurando e intendendo o Hibernate - apresenta erro ao compilar

Apresenta erro ao compilar: Message=Unable to connect to any of the specified MySQL hosts.

Estou utilizando o Visual Studio Community 2013

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Loja.Entidades
{
    class Produto
    {
        public virtual int Id { get; set; }
        public virtual string Nome { get; set; }
        public virtual double Preco { get; set; }
    }
}

produto.hbm

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" assembly="Loja"
    namespace="Loja.Entidades">
  <class name="Produto">
    <id name="Id">
      <generator class="identity"/>
    </id>
    <property name="Nome"/>
    <property name="Preco"/>
  </class>
</hibernate-mapping>

<?xml version="1.0" encoding="utf-8" ?>
<hibernate-configuration
    xmlns="urn:nhibernate-configuration-2.2">
  <session-factory>
    <property name="connection.provider">
      NHibernate.Connection.DriverConnectionProvider
    </property>
    <property name="dialect">
      NHibernate.Dialect.MySQLDialect
    </property>
    <property name="connection.driver_class">
      NHibernate.Driver.MySqlDataDriver
    </property>
    <property name="connection.connection_string">
      Server=localhost;Database=loja; Uid=nhibernate; Pwd=caelum;
    </property>
  </session-factory>
</hibernate-configuration>

using NHibernate.Cfg;
using NHibernate.Tool.hbm2ddl;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Reflection;
using System.Text;


namespace Loja
{
    class Program
    {
        static void Main(string[] args)
        {
            Configuration cfg = new Configuration();
            cfg.Configure();
            cfg.AddAssembly(Assembly.GetExecutingAssembly());
            new SchemaExport(cfg).Create(true, true);
        }
    }
}