Oscar,

>The problem is that when I set the lRequeryChildOnrequeryParent to .T., the program generates an error indicating that “ACTIVECONTROL is not an object” from the NEXT method of cBizObjMaintenanceForm.>

Try changing the following code in CBizObjMaintenanceForm.Next() to see if it fixes the problem:

change...

loControl = _SCREEN.ActiveForm.ActiveControl

To...

loControl = ThisForm.TrueActiveControl()

Let me know if this makes a difference for you.