Bone Influence area not showing up

Hi all,
I am placing bones in my character and I have prepared him like in the Bones video tutorial (excellent btw). When I go to edit the influence areas I am clicking the bone and then the influence area button but nothing happens on the screen. There is no zone to edit. Can someone help me?

Thanks,
Chris

PS: Using TBS 7 trial version on Macbook Pro w/ Mountain Lion

Ooops…just went over video again. Properties panel> Influence>Elliptical

Sorry :slight_smile: