Random button shows up in the middle of levels

I'm trying out Torque Game Builder and while it seems pretty neat, when I do anything in the behavior tutorials project, each level has a random button (with no label on it, but it does change colors when the mouse hovers over it) in the upper middle of the screen. The button is not visible in the level editor, and does not show up in other projects. Anyone have an idea about how to get rid of this? Is it something that's in the GUI editor for this level or something? Thanks for any help!