i think it's a bug that people may accidentally remove the Overflow function without being able to get it back (see my post here: http://forum.firecore.com/topic/3383).
In my point of view, 2 things should be changed to fix the bug:
1. It shouldn't be possible to select Overflow in the Overflow entry in the Overflow menu (I hope you understand what I mean)
2. The Overflow function should be made enable/disbable in the maintance menu (as the other functions of ATV Flash)