Fred,
Is Stock a form object? If so it's quite possible that the Grid is instantiating before Stock now. It's better to delay this type of inter-object dependency until the innermost container that holds the objects Inits that way you are assured both objects exist.
>I have a Grid header's caption like thisform.stock.getcaption(), Stock being a custom class on the form. It worked fine in VFP 5 but will not work in VFP 6. It says cannot find object Stock.