我们正在使用Lite.ExcelLibrary在Silverlight中导出excel文件。长期以来，它一直运行良好，但是现在我们无处不在地遇到了以下错误。请帮帮我！
异常堆栈跟踪：
System.ArgumentOutOfRangeException: Specified argument was out of the range of valid values.
Parameter name: SATSectorIndex
at Lite.ExcelLibrary.CompoundDocumentFormat.MasterSectorAllocation.GetSATSectorID(Int32 SATSectorIndex)
at Lite.ExcelLibrary.CompoundDocumentFormat.SectorAllocation.LinkSectorID(Int32 sectorID, Int32 newSectorID)
at Lite.ExcelLibrary.CompoundDocumentFormat.MasterSectorAllocation.AllocateMSATSector()
at Lite.ExcelLibrary.CompoundDocumentFormat.MasterSectorAllocation.AllocateSATSector()