Mail Button

Hey all.. I'm trying to add my own graphic to the mail nav button, but keep getting a 'you must provide a menu name' error, as per:



There's already a menu name there by default, so what gives? All other nav buttons I could change with no problems except for this one..

This is a usual problem, happens to me and others, too.
I still can't figure it out.

dont edit it from there but from picture management.

Thats how i did it.

Brilliant - it worked! Thanks, Nel!