I\'ve been trying to create navigation properties for my collection types and I found this example of how one person accomplished it using OnModelCreating. I gave it a try i
I think the issue is that you have removed the calling of base class from OnModelCreating. Try adding that also as shown below
base
OnModelCreating
protected override void OnModelCreating(DbModelBuilder modelBuilder) { base.OnModelCreating(modelBuilder); //Your configuration goes here }