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Hello Jonathan,
 Unless you have old versions lying around in Remote Buddy's 
Application Support directory , that should also make any of the new 
groups you  created disappear.
  Strange, it didn't do this the first few tries.  Then magically 
(after leaving it for 10 minutes or so), it did in fact prune the 
menus.
  Remote Buddy has no timer to rebuild the menus. It does this only on 
startup. What it has, though, is the ability to relaunch itself after 
the installation of an updated behaviour. So that might just have 
been what happened here.
 Ah, I see.  The only problem is that I'd like to keep some 
behaviors (well, one, namely the Virtual Keyboard) but remove the 
top-level menu.  It's kind of silly to have a menu group for one 
item; however,...
 Better customizability of the menus will be achieved as they become 
configurable in general.
  ..I'm guessing you'll get around to letting us do just that ;-)
  ;-)
 In any case, I am very pleased now.  I have it dim my lights 
whenever VLC is launched and bring them back up when it quits. 
Plus, controlling VLC with the remote is a much more comfortable 
experience than going for the keyboard.
Only thing I need now is the ability to browse my VIDEO_TS folders 
and launch them from within Remote Buddy's menus -- can't wait for 
Preview 7!
  I hope I can meet expectations ;-)
Best regards, 
Felix