I was able to go into the terminal and run the
program called kmenuedit. It is supposed to be the menu editor for KDE,
but it does not show up anywhere, as far as I can tell, in the large K
menu (the application launcher menu for KDE). I also noticed that I
have an application called Main Menu installed on my system. I could
open that up via the terminal and it also is not showing up in the "main
menu" under the large K icon. I think the application called Main Menu
is for Gnome perhaps, whereas the one called kmenuedit is for KDE, so
I'm thinking I should un-install Main Menu and see if that makes a
difference. These programs do not show up under the Main Menu or
kmenuedit applications either. Still trying to figure it out...