Entity Framework 6 - Knowledge Base (KB)

DbSet.Cast<TEntity>() Error: Cannot create a DbSet<IEntity> from a non-generic DbSet for objects of type 'Entity'

Version Info:...I am using C# 4.5, Entity Framework 6.0, and MEF....Code and Unit Test...I created a Test Project to explain the problem: ...https://skydrive.live.com/redir?resid=E3C97EC293A34048!2234...Please Open the UnitTest project and try to run Test...

EF6: Schema specified is not valid; ambiguous mapping

I am using EF6 with the database first approach. The database has three simple tables: Person, Token and Template...For the database I have generated the edmx model and entities...Person.cs...public partial class Person { public Person() { ...