症状
请考虑以下情况：
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你有一个包含 tablix 数据区域的 Reporting Services 报表。
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在 tablix 数据区域中有合并的单元格。
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您尝试以 PDF 格式导出报告。
在此方案中，导出失败，并且您收到以下一系列错误消息：
本地报表处理期间出错。
呈现报表时出错。
呈现报表时出错。
对象引用未设置为对象的实例。
此外，如果你检查 Reporting Services 日志文件，则会发现以下错误：
library!ReportServer_0-1!b4c!11/14/2013-10:11:27:: i INFO: RenderFromSession('/ReportFolder1/Report1') reportrendering!ReportServer_0-1!b4c!11/14/2013-10:11:29:: e ERROR: Throwing Microsoft.ReportingServices.ReportProcessing.UnhandledReportRenderingException: , Microsoft.ReportingServices.ReportProcessing.UnhandledReportRenderingException: An error occurred during rendering of the report. ---> Microsoft.ReportingServices.OnDemandReportRendering.ReportRenderingException: An error occurred during rendering of the report. ---> System.NullReferenceException: Object reference not set to an instance of an object. at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.UpdateTopItemKT(PageItem topItem, RowInfo rowInfo, PageDetailCell currCell) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateDetailCell(Tablix tablix, TablixMember colMemberParent, Int32 colGridIndex, RowInfo rowInfo, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.TraverseColumnMembers(Tablix tablix, TablixMember colMemberParent, Int32 parentColIndex, RowInfo currRowInfo, Boolean create, Double startInTablix, Double endInTablix, Int32& detailCellIndex, Int32& visibleSpan, List`1 detailCellsState, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.TraverseColumnMembers(Tablix tablix, TablixMember colMemberParent, Int32 parentColIndex, RowInfo currRowInfo, Boolean create, Double startInTablix, Double endInTablix, Int32& detailCellIndex, Int32& visibleSpan, List`1 detailCellsState, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateDetailRow(Tablix tablix, TablixMember rowMemberParent, Int32 parentRowIndex, Int32 parentColIndex, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateRowMemberChildren(Tablix tablix, TablixMember rowMemberParent, Int32 defTreeLevel, Boolean parentBorderHeader, Int32 parentRowIndex, Int32 parentColIndex, Int32 sourceIndex, Boolean resetContext, Boolean parentHasFooters, LevelInfo parentLevelInfo, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateRowMemberChildren(Tablix tablix, TablixMember rowMemberParent, Int32 defTreeLevel, Boolean parentBorderHeader, Int32 parentRowIndex, Int32 parentColIndex, Int32 sourceIndex, Boolean resetContext, Boolean parentHasFooters, LevelInfo parentLevelInfo, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateTablixRows(Tablix tablix, TablixMember rowMemberParent, Int32 defTreeLevel, Boolean parentBorderHeader, Int32 parentRowIndex, Int32 parentColIndex, List`1& pageStructMemberCell, Boolean ignoreTotals, Boolean& finishLevel, Boolean parentHasFooters, CreateItemsContext createItems, Double startInTablix, Double endInTablix, PageContext pageContext) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateTablixItems(Tablix tablix, PageContext pageContext, CreateItemsContext createItems, Double startInTablix, Double endInTablix) at Microsoft.ReportingServices.Rendering.HPBProcessing.Tablix.CreateV 解决方案
在 SQL Server 的以下累积更新中，此问题首先已修复。
SQL Server 的每个新的累积更新均包含以前的累积更新中包含的所有修补程序和所有安全修补程序。 查看 SQL Server 的最新累积更新：
状态
Microsoft 已确认这是在“适用范围”部分中列出的 Microsoft 产品存在的问题。
参考
请参阅 Microsoft 用于描述软件更新的 术语 。
