Sorry for not making it clear...AutoCAD 2004...and yes it is a pull down menu.
I was just surprised that this is only an edited (and expanded)version of the original menu (albeit renamed) and that one stays loaded no problem.
Anyway, I shall try the suggestions and let you know if it works...
I've written a new partial Menu, but for some reason every time I start a new session it has dropped out. It loads fine every time, but is gone next time I start.
Funny thing is, it was only an altered .mns file from a previous menu I'd written and that one stays in fine.
I've checked all the...