http://am22tech.com/s/22/Blogs/post/2012/08/24/YAF-BE-Integration.aspx 

I have been through the YAF install without any problems noted. Now when I navigate to ../forum/ I get the error:

Request information:

http://www.domain.com/rs/forum/default.aspx 

Request path: /rs/forum/default.aspx

User host address: 70.193.4.89

User: David

Is authenticated: True

Authentication Type: BlogEngine.NET Custom Identity

Thread account name: PHX3\Iusr_5145227

Thread information:

Thread ID: 67

Thread account name: PHX3\Iusr_5145227

Is impersonating: False

Stack trace: at BlogEngine.Core.Providers.XmlMembershipProvider.get_ApplicationName() in J:\Projects\BlogEngine_2_6_0_5\Source\BlogEngine\BlogEngine.Core\Providers\XmlProvider\XmlMembershipProvider.cs:line 70

at YAF.Classes.YafBoardSettings..ctor()

at YAF.Core.YafLoadBoardSettings..ctor(Object boardID)

at YAF.Core.CurrentBoardSettings.b__0()

at YAF.Core.HttpApplicationStateBaseExtensions.GetOrSet[T](HttpApplicationStateBase httpApplicationState, String key, Func`1 getValue)

at YAF.Core.CurrentBoardSettings.get_Instance()

at YAF.Core.YafBaseContainerModule.b__a(IComponentContext k)

at Autofac.RegistrationExtensions.<>c__DisplayClass10`1.b__f(IComponentContext c, IEnumerable`1 p)

at Autofac.Builder.RegistrationBuilder.<>c__DisplayClass1`1.b__0(IComponentContext c, IEnumerable`1 p)

at Autofac.Core.Activators.Delegate.DelegateActivator.ActivateInstance(IComponentContext context, IEnumerable`1 parameters)

at Autofac.Core.Resolving.InstanceLookup.Activate(IEnumerable`1 parameters)

at Autofac.Core.Resolving.InstanceLookup.Execute()

at Autofac.Core.Resolving.ResolveOperation.GetOrCreateInstance(ISharingLifetimeScope currentOperationScope, IComponentRegistration registration, IEnumerable`1 parameters)

at Autofac.Core.Resolving.ResolveOperation.Execute(IComponentRegistration registration, IEnumerable`1 parameters)