Datei oder Assembly konnte nicht geladen werden 'Microsoft.VisualStudio.Web.PageInspector.Loader

Could not load file or assembly 'Microsoft.VisualStudio.Web.PageInspector.Loader, Version=1.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The module was expected to contain an assembly manifest. Assembly ...