创建新的Microsoft.CodeAnalysis.CustomWorkspace – 得到了ReflectionTypeLoadException

我尝试在.NET编译器平台（“Roslyn”）样本中创建类似ConsoleClassifier的东西。 （Microsoft.CodeAnalysis v0.7 …）此时我得到一个ReflectionTypeLoadException ：

 CustomWorkspace workspace = new CustomWorkspace(); ReflectionTypeLoadException {"Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information."} LoaderExceptions: FileNotFoundException {"Could not load file or assembly 'Microsoft.Build, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. A rendszer nem találja a megadott fájlt.":"Microsoft.Build, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"} 

我错过了什么？

堆栈跟踪：

 at System.Reflection.RuntimeModule.GetTypes(RuntimeModule module) at System.Reflection.RuntimeModule.GetTypes() at System.Reflection.Assembly.GetTypes() at System.ComponentModel.Composition.Hosting.AssemblyCatalog.get_InnerCatalog() at System.ComponentModel.Composition.Hosting.AssemblyCatalog.GetExports(ImportDefinition definition) at System.ComponentModel.Composition.Hosting.AggregateCatalog.GetExports(ImportDefinition definition) at System.ComponentModel.Composition.Hosting.CatalogExportProvider.InternalGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.CatalogExportProvider.InnerCatalogExportProvider.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports) at System.ComponentModel.Composition.Hosting.CatalogExportProvider.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.AggregateExportProvider.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports) at System.ComponentModel.Composition.Hosting.CompositionContainer.GetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.ExportProvider.TryGetExportsCore(ImportDefinition definition, AtomicComposition atomicComposition, IEnumerable`1& exports) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports(ImportDefinition definition, AtomicComposition atomicComposition) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExportsCore(Type type, Type metadataViewType, String contractName, ImportCardinality cardinality) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExportsCore[T,TMetadataView](String contractName) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports[T,TMetadataView](String contractName) at System.ComponentModel.Composition.Hosting.ExportProvider.GetExports[T,TMetadataView]() at Microsoft.CodeAnalysis.Host.Mef.MefHostServices.b__6[TExtension,TMetadata](ExportKey _) at System.Collections.Immutable.ImmutableInterlocked.GetOrAdd[TKey,TValue](ImmutableDictionary`2& location, TKey key, Func`2 valueFactory) at Microsoft.CodeAnalysis.Host.Mef.MefHostServices.GetExports[TExtension,TMetadata]() at Microsoft.CodeAnalysis.Host.Mef.MefHostServices.MefWorkspaceServices..ctor(MefHostServices host, Workspace workspace) at Microsoft.CodeAnalysis.Host.Mef.MefHostServices.CreateWorkspaceServices(Workspace workspace) at Microsoft.CodeAnalysis.Workspace..ctor(HostServices host, String workspaceKind) at Microsoft.CodeAnalysis.CustomWorkspace..ctor(HostServices host, String workspaceKind) at Microsoft.CodeAnalysis.CustomWorkspace..ctor()