Menu problem.....once again.

Everything has been fine with editing menus in 9.1 Pro. Now, all of a sudden, if I edit, for example, "Multimedia," ALL apps. listed are gone, except for what I just entered. Is there a fix? Running the rebuild utility doesn't work. Fred -- "Ballmer is no more designed for the art of persuasion than the Abrams tank is for delivering meals on wheels."