DataContractSerializer Error using Entity Framework 4.0 with WCF 4.0

Question

I am attempting to retrieve a list of objects from Entity Framework via WCF, but am receiving the following exception:

There was an error while trying to serialize p

Answer 1

When using the DbContext API for Code First (EF 4.3) I had to do:

public class MyClass : DbContext
{
    public MyClass()
    {
        base.Configuration.ProxyCreationEnabled = false;
    }
}