主题：错误提示？

.NET Framework 版本：2.0.50727.5466

Foxtable 版本：2012.11.28.1

错误所在事件：

详细错误信息：

System.NullReferenceException: 未将对象引用设置到对象的实例。

   在 System.Data.Index.CompareRecords(Int32 record1, Int32 record2)

   在 System.Data.Index.IndexTree.CompareNode(Int32 record1, Int32 record2)

   在 System.Data.RBTree`1.SearchSubTree(Int32 root_id, K key)

   在 System.Data.RBTree`1.GetNodeByKey(K key)

   在 System.Data.RBTree`1.GetIndexByKey(K key)

   在 System.Data.Index.RecordStateChanged(Int32 oldRecord, DataViewRowState oldOldState, DataViewRowState oldNewState, Int32 newRecord, DataViewRowState newOldState, DataViewRowState newNewState)

   在 System.Data.DataTable.RecordStateChanged(Int32 record1, DataViewRowState oldState1, DataViewRowState newState1, Int32 record2, DataViewRowState oldState2, DataViewRowState newState2)

   在 System.Data.DataTable.SetNewRecordWorker(DataRow row, Int32 proposedRecord, DataRowAction action, Boolean isInMerge, Int32 position, Boolean fireEvent, Exception& deferredException)

   在 System.Data.DataTable.SetNewRecord(DataRow row, Int32 proposedRecord, DataRowAction action, Boolean isInMerge, Boolean fireEvent)

   在 System.Data.DataRow.SetNewRecord(Int32 record)

   在 System.Data.DataRow.EndEdit()

   在 System.Data.DataRow.set_Item(DataColumn column, Object value)

   在 System.Data.DataRow.set_Item(String columnName, Object value)

   在 Foxtable.DataTable.Ol100l0l0100l(DataRow[] OO0l)