Estamos enfrentando falhas em várias máquinas no designer do WPF VS2010 no seguinte cenário:

VS 2010 SP1 instalado64 bits do Windows 7Referência para NHibernate.dll (versão 1.2.0.712)

Para reproduzir o erro, crie uma nova solução WPF, execute as seguintes ações:

criar uma nova solução WPFabra a janela principal, adicione uma caixa de texto a ela, defina um texto estáticoadicionar uma referência ao FluentNhibernate.dll, versão 1.2.0.712Limpar e reconstruir a soluçãoAbra a janela principal no designer novamente, edite o textono designer, clique à esquerda da janela e, em seguida, volte para a caixa de texto novamente

Não há Data / Command Bindings, nenhum código que faça referência à funcionalidade FluentNHibernate ou qualquer coisa altamente sofisticada, apenas uma nova solução WPF com o seguinte XAML no MainWindow.xaml:

<code><Window x:Class="testWpfApplication2.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Title="MainWindow" Height="350" >
  <Grid>
    <TextBox Text="yxcydfdssdfsdfdsfsdsddsasdyxcasd"  />
  </Grid>
</Window>
</code>

Aqui está o Stacktrace completo:

<code>System.Reflection.TargetInvocationException
Exception has been thrown by the target of an invocation.
   at System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner)   
   at System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner)   
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)   
   at System.Delegate.DynamicInvokeImpl(Object[] args)   
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)   
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

System.NullReferenceException
Object reference not set to an instance of an object.
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeTypeVariable(Type type)   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeType(Type type)   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.EnsureRuntimeType(Type type)   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.GetRuntimeType(Type type)   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkType.TryGetRuntimeType()   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkUtil.EnsureRuntimeType(Type type)   
   at Microsoft.VisualStudio.Shell.Design.VsTargetFrameworkProvider.GetRuntimeType(Type reflectionType)   
   at MS.Internal.Package.VSIsolationProviderService.RemoteReferenceProxy.VsReflectionResolver.GetRuntimeType(Type reflectionType)   
   at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.CachingReflectionResolver.GetRuntimeType(Type reflectionType)   
   at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.Microsoft.Windows.Design.Metadata.IReflectionResolver.GetRuntimeType(Type reflectionType)   
   at MS.Internal.Metadata.ClrType.get_RuntimeMember()   
   at MS.Internal.Metadata.ClrMember`1.Microsoft.Windows.Design.Metadata.Reflection.IReflectionMember.get_MemberInfo()   
   at MS.Internal.Metadata.ClrType.Equals(Object obj)   at System.Collections.Generic.ObjectEqualityComparer`1.Equals(T x, T y)   
   at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)   
   at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensionImplementations.<>c__DisplayClass5.<FindAttachableProperties>b__4(ITypeMetadata walkType)   
   at MS.Internal.Design.Metadata.Xaml.XamlType.<GetAllAttachableProperties>d__7.MoveNext()   
   at MS.Internal.Design.Metadata.Xaml.XamlType.<FindAttachableProperties>d__0.MoveNext()   
   at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensionImplementations.<FindAttachableProperties>d__7.MoveNext()   
   at MS.Internal.VirtualModel.VirtualModelPropertyCollection.<GetUncachedProperties>d__0.MoveNext()   
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)   
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)   
   at MS.Internal.VirtualModel.VirtualModelPropertyCollection.GetEnumerator()  
   at MS.Internal.Designer.PropertyEditing.Model.Properties.ModelPropertyMerger.<GetFirstProperties>d__0.MoveNext()   
   at MS.Internal.Designer.PropertyEditing.Views.PropertyEntryReader.RedraftEntries(IPropertyViewManager viewManager, Selection selection, Boolean attachedOnly, IEventCodeBehindProxy eventCodeBehindProxy, CategoryList categoryList)   
   at MS.Internal.Designer.PropertyEditing.PropertyInspector.UpdateCategories(Selection selection, Boolean attachedOnly, IEntryReader entryReader)   
   at MS.Internal.Designer.PropertyEditing.PropertyInspector.RefreshPropertyList(Boolean attachedOnly)   
   at MS.Internal.Designer.PropertyEditing.PropertyInspector.OnSelectionChangedIdle()
</code>

MS confirmou isso como um bug SP1, mas para um resultado satisfatório, eu preciso entender mais sobre o problema ...

O que causa isso, por que isso ocorre apenas quando addind FNH, porque apenas ao adicioná-lo de um determinado local (assembly é o mesmo - fizemos uma comparação bytewise)? Sem o SP1, funciona ...