If you create a variable and then create a list with the same name as the variable, your list is seemingly deleted. It doesn't show up when you put a check in it's box. Instead, your variable shows up with whatever value you had it set to. It's very weird. I've composed a picture representation:

http://i50.tinypic.com/6i8o5g.jpg

Hope I helped! :p

A, nice report - thanks especially for the pic, it helps a ton! We'll get this one fixed.