I just installed and ran the light configuration tool.
Boy, that was weird. I finished making my light choices, saved a profile, then . . . scratched my head. Where's the button to close the box when you are finished?
I closed it from the taskbar.
Edit: After seeing Patrick's screenshot of his light tool panel, I realize I can't see the bottom section of mine. My panel has the "set default values" button in the lower right corner, and there is no step 4 for me. No apply or close buttons show either obviously. My screen resolution is 3840x768.