Customising menus in Analog Environment - menus not loading

I'm trying to add a custom menu to Analog Environment - I'm following the guidance in Solution 11286092 but the menu file doesn't seem to be being loaded by the system. I know that there's a certain amount of customisation to our local setup, so is there a straightforward way that I can trace what's going on and work out why the spectre.menus file isn't being loaded from ~/menus?

 I'm running ICFB 5.10.41_USR5.90.69 and our simulator is SmartSpice.

 Thanks,

 Mike