主题：出错了，请问是什么原因

.NET Framework 版本：2.0.50727.3643
Foxtable 版本：2012.11.28.1
错误所在事件：
详细错误信息：
System.InvalidOperationException: Property not accessible because 'Cannot have a relationship between tables in different DataSets.'.
   at System.Data.DataTable.SetNewRecordWorker(DataRow row, Int32 proposedRecord, DataRowAction action, Boolean isInMerge, Int32 position, Boolean fireEvent, Exception& deferredException)
   at System.Data.DataTable.SetNewRecord(DataRow row, Int32 proposedRecord, DataRowAction action, Boolean isInMerge, Boolean fireEvent)
   at System.Data.DataRow.SetNewRecord(Int32 record)
   at System.Data.DataRow.EndEdit()
   at Foxtable.DataTable.O10O10110Ol0OO1l1O11lOO0(Object OOlO11, DataColumnChangeEventArgs O)