Menu button problem

[David Squance]

I've been experimenting a bit with menu buttons.  I built a cascading 
menu button which works very nicely for choosing between several cards. 
  When I tried to do the same thing for a font selection the behaviour 
is very strange.  First, it activates on mouseover or mousewithin, 
neither of which commands are anywhere to be found in the stack.  And, 
after quitting and restarting RR, now the button contents are not 
displayed at all.  There's just a brief flash of the outline and it 
disappears again.
I'm using RR2.1.2 Mac OS10.3.6
Dave