我在创建空白 wpf .Net 3.5 项目时遇到问题。Visual Studio 抛出错误并停止工作。这很奇怪，因为当我在 .Net 3.5 中创建其他项目（如 windows 窗体）时，它可以正常工作（我也在其他 .Net 框架中测试过，没有错误）。
这是复制的错误详细信息：
System.ArgumentException
Type universe cannot resolve assembly: System.Xaml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089.
at System.Reflection.Adds.TypeNameParser.DetermineAssembly(AssemblyName assemblyName, Module defaultTokenResolver, ITypeUniverse universe)
at System.Reflection.Adds.TypeNameParser.<>c__DisplayClass2.<ParseTypeName>b__0(AssemblyName assemblyName)
at System.TypeNameParser.ResolveAssembly(String asmName, Func`2 assemblyResolver, Boolean throwOnError, StackCrawlMark& stackMark)
at System.TypeNameParser.ConstructType(Func`2 assemblyResolver, Func`4 typeResolver, Boolean throwOnError, Boolean ignoreCase, StackCrawlMark& stackMark)
at System.TypeNameParser.GetType(String typeName, Func`2 assemblyResolver, Func`4 typeResolver, Boolean throwOnError, Boolean ignoreCase, StackCrawlMark& stackMark)
at System.Type.GetType(String typeName, Func`2 assemblyResolver, Func`4 typeResolver, Boolean throwOnError)
at System.Reflection.Adds.TypeNameParser.ParseTypeName(ITypeUniverse universe, Module module, String input, Boolean throwOnError)
at Microsoft.MetadataReader.UnresolvedTypeName.ConvertToType(ITypeUniverse universe, Module moduleContext)
at Microsoft.MetadataReader.MetadataExtensionsPolicy20.TryTypeForwardResolution(MetadataOnlyAssembly assembly, String fullname, Boolean ignoreCase)
at Microsoft.MetadataReader.MetadataOnlyAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase)
at Microsoft.MetadataReader.MetadataOnlyAssembly.GetType(String name)
at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.GetAssemblyType(Reflectable`1 assembly, String typeName)
at MS.Internal.Metadata.ClrAssembly.GetType(String typeName)
at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.LoadType(String typeName)
at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.GetType(String fullName)
at Microsoft.Windows.Design.Metadata.ReflectionMetadataContext.GetType(String fullName)
at Microsoft.Windows.Design.Metadata.IdentifierExtensionImplementations.GetType(IMetadataContext scope, TypeIdentifier typeId)
at MS.Internal.Design.Metadata.Xaml.XamlAssembly.get_XmlNamespaceCompatibilityMappings()
at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensionImplementations.GetXmlNamespaceCompatibilityMappings(IAssemblyMetadata sourceAssembly)
at Microsoft.Windows.Design.Metadata.Xaml.XamlExtensions.GetXmlNamespaceCompatibilityMappings(IAssemblyMetadata source)
at MS.Internal.Design.Metadata.ReflectionProjectNode.BuildSubsumption()
at MS.Internal.Design.Metadata.ReflectionProjectNode.SubsumingNamespace(Identifier identifier)
at MS.Internal.Design.Markup.XmlElement.BuildScope(PrefixScope parentScope, IParseContext context)
at MS.Internal.Design.Markup.XmlElement.ConvertToXaml(XamlElement parent, PrefixScope parentScope, IParseContext context, IMarkupSourceProvider provider)
at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.FullParse(Boolean convertToXamlWithErrors)
at MS.Internal.Design.DocumentModel.DocumentTrees.Markup.XamlSourceDocument.get_RootItem()
at Microsoft.Windows.Design.DocumentModel.Trees.ModifiableDocumentTree.get_ModifiableRootItem()
at Microsoft.Windows.Design.DocumentModel.MarkupDocumentManagerBase.get_LoadState()
at MS.Internal.Host.PersistenceSubsystem.Load()
at MS.Internal.Host.Designer.Load()
at MS.Internal.Designer.VSDesigner.Load()
at MS.Internal.Designer.VSIsolatedDesigner.VSIsolatedView.Load()
at MS.Internal.Designer.VSIsolatedDesigner.VSIsolatedDesignerFactory.Load(IsolatedView view)
at MS.Internal.Host.Isolation.IsolatedDesigner.BootstrapProxy.LoadDesigner(IsolatedDesignerFactory factory, IsolatedView view)
at MS.Internal.Host.Isolation.IsolatedDesigner.BootstrapProxy.LoadDesigner(IsolatedDesignerFactory factory, IsolatedView view)
at MS.Internal.Host.Isolation.IsolatedDesigner.Load()
at MS.Internal.Designer.DesignerPane.LoadDesignerView()
图片：
我也尝试修复、卸载和重新安装 Visual Studio，但仍然有错误。
有什么帮助吗？
更新：只有当我打开 xaml 文件时才会发生错误。