Ed,

> I am getting an exception when closing my app. It did not occur in 4.9.9.
>
> In the destruction of the main form I explicitly close my connection which
> causes the following call stack:
>
> IBODataset.TIBOInternalDataset.DoHandleError($585DF10,335544569,$8335FB0,$
> 8336D70,-901,$8336DB0,$8336E30,True)
> IB_Components.TIB_Session.DoHandleError($585DF10,335544569,$8335FB0,$8336D
> 70,-901,$8336DB0,$8336E30,True)
> IB_Session.TIB_SessionBase.HandleException($585DF10)
> IB_Components.TIB_Statement.API_Execute($3855C50)
> IB_Components.TIB_Dataset.SysExecSelect
> IB_Components.TIB_Statement.SysExecStatement
> IB_Components.TIB_BDataset.SysExecStatement
> IB_Components.TIB_Statement.SysExecute
> IB_Components.TIB_Dataset.SysExecute
> IB_Components.TIB_Dataset.SysOpen('','',-2147483648)
> IBODataset.TIBODataset.DoBeforeOpen
> DB.TDataSet.SetActive(???)
> DB.TDataSet.Open
> IBODataset.TIBODataset.RefreshParams(True)
> IBODataset.TIBOQueryDataLink.ActiveChanged
> DB.TDataLink.SetActive(???)
> DB.TDataLink.UpdateState
> DB.TDataLink.DataEvent(???,0)
> DB.TDataSource.NotifyLinkTypes(deUpdateState,0,False)
> DB.TDataSource.NotifyDataLinks(deUpdateState,0)
> DB.TDataSource.SetState(???)
> DB.TDataSource.UpdateState
> DB.TDataSource.DataEvent(deUpdateState,0)
> DB.TDataSet.DataEvent(deUpdateState,0)
> DB.TDataSet.SetState(???)
> DB.TDataSet.SetActive(???)
> DB.TDataSet.Close
> IBODataset.TIBOInternalDataset.SysClose
> IB_Components.TIB_Statement.SysUnprepare
> IB_Components.TIB_Dataset.SysUnprepare
> IB_Components.TIB_Statement.SysDeallocate(True)
> IB_Components.TIB_Connection.DeallocateStatements
> IB_Components.TIB_Connection.SysBeforeDisconnect
> IB_Components.TIB_Connection.SysDisconnect
> IB_Components.TIB_Connection.Disconnect
> master.TfrmMaster.DisconnectData(True)
> master.TfrmMaster.Destroy
>
>
> which raises the following exception:
>
> ---------------------------
> Debugger Exception Notification
> ---------------------------
> Project trak.exe raised exception class EIBO_ISCError with message 'ISC
> ERROR CODE:335544569
>
> ISC ERROR MESSAGE:
> Dynamic SQL Error
> SQL error code = -901
> invalid transaction handle (expecting explicit transaction start)
>
> STATEMENT:
> qrySpouse.IBOqrqrySpouse(TIBOInternalDataset)
>
> '.
> ---------------------------
> Break Continue Help
> ---------------------------
>
> the exception is not visible to the user, but is a pain when closing the
> app in the IDE.
>
> What should I look for with the exception?

Would you please send me a sample app of this problem?

In the meantime I'll see if I can figure out what the problem is.

Jason