Neither the "Photos" nor the "Music and Sounds" browsers work

They both are blank and the dropdown menus contain nothing. I have both iTunes and Aperture installed.

If I pull down and expose the top area and drop into it a folder of photos or music, a green arrow appears and the top area is framed in green. But when the folder is dropped nothing happens. The name does not appear in the top area. I have tried folders straight from iTunes, others with MPEGs and folders with JPGs; none of them appear when dropped. (If I try a folder with incorrect files it does not show the green plus and rejects it, as expected.)

I've reinstalled FCPX 10.0.6 (Trial Version) twice, rebooted, removed all preferences, logged in as a different user and cursed violently. None of these actions have solved the problem.

I'm using Mac Lion and the most current versions of iTunes and Aperture.