C# – Exceptions for Entity Framework Code First Migrations

I'm getting several unhandled exceptions while using Code First Migrations of Entity Framework 4.3.

The database context:

public class MyAppContext : DbContext
{
   public DbSet<Branch> Branches { get; set; }

   public MyAppContext()
   { }
}

The entity:

public class Branch : IEntity<Guid>
{
    public Guid Id { get; set; }
    public string Name { get; set; }
    public string Description { get; set; }
    public bool Active { get; set; }
 }

The database initializer:

public class MyAppInitializer : CreateDatabaseIfNotExists<MyAppContext>
{
   protected override void Seed(MyAppContext context)
   {
      context.Branches.Add(new Branch() { Id = branchId, Name = "Acme", Description = "Acme", Active = true });
      context.SaveChanges();
   }
}

I installed Entity Framework 4.3 to my DAL project and MVC project using:

Install-Package EntityFramework

I have set the MVC project as the startup project and executed the following command to the DAL project with the database context and initializer:

PM> Enable-Migrations -Verbose

Using NuGet project 'Ckms.KeyManagement.Managers'.
Error while searching for context type (specify -Verbose to see exception details).
System.Data.Entity.Migrations.Design.ToolingException: Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information. at
System.Data.Entity.Migrations.Design.ToolingFacade.Run(BaseRunner
runner) at
System.Data.Entity.Migrations.Design.ToolingFacade.GetContextTypes()
at
System.Data.Entity.Migrations.MigrationsCommands.FindContextToEnable()
Edit the generated Configuration class to specify the context to
enable migrations for.
Code First Migrations enabled for project Ckms.KeyManagement.Managers.

A DbMigrationsConfiguration child class is added to the DAL project. If I add the type of the DbContext manually and enable Automatic Migrations:

internal sealed class Configuration : DbMigrationsConfiguration<MyAppContext>
{
   public Configuration()
   {
      AutomaticMigrationsEnabled = true;
   }

   protected override void Seed(MyAppContext context)
   { }
}

These exceptions are thrown for the Add-Migration and Update-Database commands:

PM> Add-Migration TestEFMigrationsColumn -Verbose

Using NuGet project
'Ckms.KeyManagement.Managers'. Using StartUp project ''.
System.Reflection.TargetInvocationException: Exception has been thrown
by the target of an invocation. —> System.ArgumentException: The
parameter is incorrect. (Exception from HRESULT: 0x80070057
(E_INVALIDARG)) — End of inner exception stack trace — at
System.RuntimeType.InvokeDispMethod(String name, BindingFlags
invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers,
Int32 culture, String[] namedParameters) at
System.RuntimeType.InvokeMember(String name, BindingFlags
bindingFlags, Binder binder, Object target, Object[] providedArgs,
ParameterModifier[] modifiers, CultureInfo culture, String[]
namedParams) at
System.Management.Automation.ComMethod.InvokeMethod(PSMethod method,
Object[] arguments) Exception has been thrown by the target of an
invocation.

Update-Database:

PM> Update-Database -Verbose

Using NuGet project
'Ckms.KeyManagement.Managers'. Using StartUp project ''.
System.Reflection.TargetInvocationException: Exception has been thrown
by the target of an invocation. —> System.ArgumentException: The
parameter is incorrect. (Exception from HRESULT: 0x80070057
(E_INVALIDARG)) — End of inner exception stack trace — at
System.RuntimeType.InvokeDispMethod(String name, BindingFlags
invokeAttr, Object target, Object[] args, Boolean[] byrefModifiers,
Int32 culture, String[] namedParameters) at
System.RuntimeType.InvokeMember(String name, BindingFlags
bindingFlags, Binder binder, Object target, Object[] providedArgs,
ParameterModifier[] modifiers, CultureInfo culture, String[]
namedParams) at
System.Management.Automation.ComMethod.InvokeMethod(PSMethod method,
Object[] arguments) Exception has been thrown by the target of an
invocation.

Any ideas? The error messages are not really helpful. I have tried the Nuget commands with and without an existing database.