C# – Entity Framework Exception: Invalid object name

I am trying to create database using Code First approach. When I run the following code I am getting the following exception. Is there anything wrong in the fields that I defined? How can we overcome this?

Exception:

An error occurred while updating the entries. See the inner exception for details.

Inner Exception:

"Invalid object name 'dbo.Dinners'.

Note: I do not have such a table (Dinners) in the database. The code is supposed to create the tables. I just gave connection string to identify the server as mentioned in EF Code First: Cannot connect to SQL Server. Should I change the connection string?

Connections String:

string connectionstring = "Data Source=.;Initial Catalog=LibraryReservationSystem;Integrated Security=True;Connect Timeout=30";

The LibraryReservationSystem database is already existing database. It has no tables. I am expecting EF to create the tables.

The connection string I copied from a working LINQ 2 SQL application. Do I need to make any changes to it to supply to EF?

UPDATE

When I included the following code, the exception got changed. Now it says – "Invalid object name 'dbo.Dinner'.". It is now complaining about Dinner table; not Dinners table.

    protected override void OnModelCreating(DbModelBuilder modelbuilder)
    {
        modelbuilder.Conventions.Remove<PluralizingTableNameConvention>();
    }

Original CODE

    static void Main(string[] args)
    {

        string connectionstring = "Data Source=.;Initial Catalog=LibraryReservationSystem;Integrated Security=True;Connect Timeout=30";

        using (var db = new NerdDinners(connectionstring))
        {
            var product = new Dinner { DinnerID = 1, Title = 101 };
            db.Dinners.Add(product);
            int recordsAffected = db.SaveChanges();
        }

    }


using System.Data.Entity;
namespace LijosEF
{
public class Dinner
{
    public int DinnerID { get; set; }
    public int Title { get; set; }

}

public class RSVP
{
    public int RSVPID { get; set; }
    public int DinnerID { get; set; }

    public virtual Dinner Dinner { get; set; }
}

//System.Data.Entity.DbContext is from EntityFramework.dll
public class NerdDinners : System.Data.Entity.DbContext
{

    public NerdDinners(string connString): base(connString)
    { 

    }

    public DbSet<Dinner> Dinners { get; set; }
    public DbSet<RSVP> RSVPs { get; set; }
}
}

REFERENCE

1. http://nerddinner.codeplex.com/discussions/358197
2. Entity framework – Invalid Object Name
3. Invalid object name 'dbo.TableName' when retrieving data from generated table
4. http://blogs.msdn.com/b/adonet/archive/2011/09/28/ef-4-2-code-first-walkthrough.aspx