I have an ASP.NET MVC 4 application that using the Universal providers for session state:

```
<sessionState mode="Custom" sqlConnectionString="DefaultConnection" customProvider="DefaultSessionProvider">
      <providers>
        <add name="DefaultSessionProvider" type="System.Web.Providers.DefaultSessionStateProvider, System.Web.Providers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" connectionStringName="DefaultConnection" />
      </providers>
    </sessionState>

```

When I upgraded to entity framework 6 I now get this error: `Method not found: 'System.Data.Objects.ObjectContext System.Data.Entity.Infrastructure.IObjectContextAdapter.get_ObjectContext()'.`

I tried adding the reference to System.Data.Entity.dll back in but that didn't work and I know that your not suppose to add that with the new entity framework..