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[InvalidCastException: Unable to cast object of type 'EPiServer.Common.GuestAuthor' to type 'EPiServer.Common.UserAuthor'.] Circuit.RelatePlus.Intranet.NewsFeed.NewsFeedModule.FrameworkFactoryBase_EntityAdded(IEntityEventArgs args) in C:\projects\Handelskammaren\branch\Relate_Intranet\Sites\Relateplus-Intranet\Circuit.RelatePlus.Intranet.NewsFeed\NewsFeedModule.cs:177 EPiServer.Common.EntityEventHandler.Invoke(IEntityEventArgs args) +0 EPiServer.Common.Data.<>c__DisplayClass3.<UpdateEntity>b__0() +1953 EPiServer.Common.Data.DatabaseHandler.RunInTransaction(TransactionCode transactionCode) +181 EPiServer.Common.Data.FrameworkFactoryBase.UpdateEntity(IEntity entity, Int32 id, Boolean add) +206 [FrameworkException: Could not update entity of type Circuit.RelatePlus.Intranet.Documents.VersioningFileCommunityEntity, Circuit.RelatePlus.Intranet.Documents with id 851.] EPiServer.Common.Data.FrameworkFactoryBase.UpdateEntity(IEntity entity, Int32 id, Boolean add) +461 Circuit.RelatePlus.Intranet.Documents.DocumentManager.AddCommunityEntity(VersioningFileCommunityEntity entity) in C:\projects\Handelskammaren\branch\Relate_Intranet\Sites\Relateplus-Intranet\Circuit.RelatePlus.Intranet.Documents\DocumentManager.cs:134 Circuit.RelatePlus.Intranet.Documents.DocumentsModule.VersioningDirectory_UnifiedFileAdded(UnifiedDirectory sender, UnifiedVirtualPathEventArgs e) in C:\projects\Handelskammaren\branch\Relate_Intranet\Sites\Relateplus-Intranet\Circuit.RelatePlus.Intranet.Documents\DocumentsModule.cs:27 EPiServer.Web.Hosting.UnifiedDirectoryEventHandler.Invoke(UnifiedDirectory sender, UnifiedVirtualPathEventArgs e) +0 EPiServer.Web.Hosting.VersioningDirectory.CreateFile(String name, Guid id) +494 EPiServer.Web.Hosting.VersioningDirectory.CreateFile(String name) +159 EPiServer.UI.Hosting.UploadFile.HandleUploadedFiles() +1139 EPiServer.UI.Hosting.UploadFile.UploadButton_Click(Object sender, EventArgs e) +96 EPiServer.UI.WebControls.ToolButton.RaisePostBackEvent(String eventArgument) +254 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3707

[NullReferenceException: Object reference not set to an instance of an object.] EPiServer.Web.Hosting.Versioning.VersioningFileSummary..ctor(FileItem file, FileOperations fileOp) +25 EPiServer.Web.Hosting.Versioning.VersioningFileSystem.GetFileSummary(IFileHandler file) +96 EPiServer.Web.Hosting.VersioningFile.get_Summary() +24 EPiServer.UI.Hosting.DhtmlSupport.CanPersist(UnifiedDirectory dir) +38 EPiServer.UI.Hosting.DhtmlSupport.SetUpHKA(UnifiedDirectory dir, AccessControlList acl) +798 EPiServer.UI.Hosting.DhtmlSupport.OnPreRender(EventArgs e) +61 System.Web.UI.Control.PreRenderRecursiveInternal() +103 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Control.PreRenderRecursiveInternal() +175 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2496