のVisual Studio 2015：タイプの宇宙は、アセンブリを解決することはできません。UWPフォームを設計しようとするとSystem.Runtime、バージョン= 0.0.0.0

Question

は、私は、Visual Studioで問題が発生しています。デザイナーはロードされません。私はこのエラーです：

Microsoft.MetadataReader.UnresolvedAssemblyException 
Type universe cannot resolve assembly: System.Runtime, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. 
    at Microsoft.MetadataReader.SimpleUniverse.Microsoft.MetadataReader.ITypeUniverse.ResolveAssembly(AssemblyName name) 
    at Microsoft.MetadataReader.TypeNameParser.DetermineAssembly(AssemblyName assemblyName, Module defaultTokenResolver, ITypeUniverse universe) 
    at Microsoft.MetadataReader.TypeNameParser.c__DisplayClass1_0.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 Microsoft.MetadataReader.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.b__30_1(Assembly assembly, String simpleTypeName, Boolean ignoreCaseInCallback) 
    at System.TypeNameParser.ResolveType(Assembly assembly, String[] names, Func`4 typeResolver, Boolean throwOnError, Boolean ignoreCase, 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, Boolean ignoreCase) 
    at Microsoft.MetadataReader.MetadataOnlyAssembly.GetType(String name, Boolean throwOnError, Boolean ignoreCase) 
    at Microsoft.MetadataReader.MetadataOnlyAssembly.GetType(String name) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.GetReferenceType(Type runtimeType) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.TryGetReferenceType(Type runtimeType, Type& referenceType) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.InternalGetType(Type type, ExternalType externalType, IType& returnValue) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.GetType(Type type) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.GetPlatformType(String typeName, ITypeId typeId) 
    at Microsoft.VisualStudio.DesignTools.Platform.Metadata.PlatformMetadataBase.ResolveType(ITypeId typeId) 
    at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlPlatformMetadata.CreateExternalType(IPlatformTypes sourcePlatformTypes, IAssembly runtimeAssembly, IAssembly referenceAssembly, Type keyType, Type replaceType, ITypeId baseType, ITypeId neutralType, IXmlNamespace xmlNamespace, String clrNamespace, AttributeCollection attributes, ProxyPropertyDescription[] properties) 
    at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.Metadata.WindowsUIXamlPlatformMetadata.Initialize() 
    at Microsoft.VisualStudio.DesignTools.WindowsXamlDesigner.WindowsStoreXamlPlatform.Initialize() 
    at Microsoft.VisualStudio.DesignTools.Platform.PlatformCreatorBase.CreatePlatform(IPlatformReferenceAssemblyResolver referenceAssemblyResolver) 
    at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectContextManager.GetProjectContext(IHostProject project, IPlatform platform, Boolean create) 
    at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectContextManager.GetSourceItemContext(IHostSourceItem sourceItem) 
    at Microsoft.VisualStudio.DesignTools.Designer.DesignerService.CreateDesigner(IHostSourceItem item, IHostTextEditor editor, CancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.c__DisplayClass12_0.b__0(CancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.c__DisplayClass6_0`1.b__0() 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.Call.InvokeWorker() 

System.Reflection.TargetInvocationException 
Type universe cannot resolve assembly: System.Runtime, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. 

Server stack trace: 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.WaitForCompletion(NestedCallContext nestedCallContext, BlockingCall call, WaitHandle timeoutSignal) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.MarshalInSynchronous(Action action, Int32 targetApartmentId, CancellationToken cancelToken, CallModality callModality, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.MarshalIn(Action action, Int32 targetApartmentId, CancellationToken cancelToken, CallSynchronizationMode syncMode, CallModality callModality, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.ThreadMarshaler.MarshalIn(IRemoteObject targetObject, Action action, CancellationToken cancelToken, CallSynchronizationMode syncMode, CallModality callModality, ApartmentState apartmentState, String memberName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.MarshalInWithCancellation[TResult](IRemoteCancellationToken remoteToken, Func`2 func, ApartmentState apartmentState) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.RemoteDesignerService.Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.IRemoteDesignerService.CreateDesigner(IRemoteHostProject remoteProject, IRemoteHostSourceItem remoteItem, IRemoteHostTextEditor remoteEditor, IRemoteCancellationToken remoteToken) 
    at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs) 
    at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg) 

Exception rethrown at [0]: 
    at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg) 
    at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.IRemoteDesignerService.CreateDesigner(IRemoteHostProject remoteProject, IRemoteHostSourceItem remoteItem, IRemoteHostTextEditor remoteEditor, IRemoteCancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerService.CreateDesignerImpl(IRemoteDesignerService ds, IHostSourceItem item, IHostTextEditor editor, RemoteCancellationToken remoteCancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerService.c__DisplayClass14_0.b__0(IRemoteDesignerService ds, RemoteCancellationToken remoteToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerService.c__DisplayClass5_0`1.b__0(IRemoteDesignerService ds) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.ThreadMarshaler.c__DisplayClass28_0`1.b__0() 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.Call.InvokeWorker() 

System.Reflection.TargetInvocationException 
Type universe cannot resolve assembly: System.Runtime, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.WaitForCompletion(NestedCallContext nestedCallContext, BlockingCall call, WaitHandle timeoutSignal) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.MarshalOutSynchronous(Action action, Int32 targetApartmentId, WaitHandle aborted, WaitHandle timeoutSignal, CancellationToken cancelToken, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.STAMarshaler.MarshalOut(Action action, Int32 targetApartmentId, WaitHandle aborted, CancellationToken cancelToken, CallSynchronizationMode syncMode, WaitHandle timeoutSignal, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.ThreadMarshaler.MarshalOut[TValue](RemoteHandle`1 targetObject, Action action, CancellationToken cancelToken, CallSynchronizationMode syncMode, ApartmentState apartmentState, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.ThreadMarshaler.MarshalOut[TValue](RemoteHandle`1 targetObject, Action`1 action, CancellationToken cancelToken, CallSynchronizationMode syncMode, ApartmentState apartmentState, String methodName, String filePath, Int32 lineNumber) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerService.MarshalOutWithCancellation[TResult](CancellationToken cancelToken, Func`3 func, ApartmentState apartmentState) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.Remoting.LocalDesignerService.Microsoft.VisualStudio.DesignTools.DesignerContract.IDesignerService.CreateDesigner(IHostSourceItem item, IHostTextEditor editor, CancellationToken cancelToken) 
    at Microsoft.VisualStudio.DesignTools.DesignerContract.IsolatedDesignerService.IsolatedDesignerView.CreateDesignerViewInfo(CancellationToken cancelToken) 

私はもちろん、成功していない再構築しました。 MainPage.xamlを開いたときに空白のアプリケーションが発生します。 私が気になることは、このエラーレポートの想定System.Runtimeバージョンが0.0.0.0であることです。これはこれを解決するためのヒントでしょうか？その後、再構築

Answer 1

私は「自動的にVisual Studioでビルド中に不足しているパッケージをチェックし、」チェックすることにより、同様のエラーを解決することができた（「NuGetが不足しているパッケージのダウンロードを許可する」がすでに確認しました）、。これらの設定は、[ツール] - > [NuGetパッケージマネージャ] - > [パッケージマネージャ設定]で確認できます。