Cascading menu - help please :)

Hello … help please help … this is driving me nuts !!

Problem - Basically I want to customizing a cascading menu but when I add or remove sub menu’s from this file it seems to mess everything up…

Examples:

File one is the original from flash kit - which I have being trying to customize unsuccessfully.

File two shows the menu working if i have the same number of sub menus in each menu

File three shows the menu all messed up when I try to add or remove a sub menu.

I’m obviously missing something fundamental in this but I just can’t work it out !

Any advice would be really appreciated - I’m lost with this :d:

Cheers in advance

rormac