Hi, I have nine tables in my database that I’m attempting to seed.  As long as I load just one record for each table everything works fine.  When I try seeding each table with more than one record, I get an error message if I query the database. 

Here’s the error message:

Unable to determine the principal end of the 'SchoolIn.Models.CourseProgress_Parent' relationship. Multiple added entities may have the same primary key.

Here are 2 of the 9 tables in my initializer:

  public class SchoolInDbInitializer: DropCreateDatabaseAlways<SchoolInDB>

        protected override void Seed(SchoolInDB context)

        {

            context.Parents.Add(new Parent { Name = "Mary Joe", Phone = "949-999-987", Notes = "Speak only to dad" });

            context.Parents.Add(new Parent { Name = "Mary Joe", Phone = "949-999-987", Notes = "Speak only to dad" });

          context.Courses.Add (new Course{Name="Algebra 1", LearningResource ="PearsonEtext",PrerequisiteGrade ="Pre Algebra B", TotalCredits =5});

          context.Courses.Add(new Course { Name = "Algebra 1", LearningResource = "PearsonEtext", PrerequisiteGrade = "Pre Algebra B", TotalCredits = 5 });

  base.Seed(context);

        }

Here’s the action that queries the database:

public ActionResult Search(String q)

        {

           if (q == "")

                           else

            ViewBag.searchterm = q

            var courseprogresses = db.CourseProgresses.Include("Teacher").Where(a => a.Teacher.Name.Contains(q) || q == null).Take(10);

               return View(courseprogresses);

        }

Does it have anything to do with not specifying primary keys in the initializer?