Sub AddProduct()
Application.ScreenUpdating = False

Range("AA1:AB1").Select
Range(Selection, Selection.End(xlDown)).Select ' error with or
without this line
Application.CutCopyMode = False ' error
with or without this line
ActiveSheet.ShowDataForm '
produces the error

Application.ScreenUpdating = True

End Sub

I can produce the form manually selecting Data|Form. However, when trying
to add more items, get "cannot extend list or database".

Any ideas?

TIA
doco