I will be a bit more specific`
(* Both formats set in individual or separated cells wok *)
Hyperlink["GraphicsObjectLabel", {"notebook.nb", "celltag"}]
Hyperlink["GraphicsObjectLabel", "notebook.nb"]
(* But if set inside a compund construct as in a module *)
Module[{},
(* some executable code *)
(* this does not work *)
Hyperlink["GraphicsObjectLabel", {"notebook.nb", "celltag"}];
(* some executable code *)
(* this does work *)
Hyperlink["GraphicsObjectLabel", "notebook.nb"]
]
Martin