Material Library Not Accessible?

Somehow in one blend file, I can’t select other materials in my scene like I usually can. The only options I get when I click on the materials drop menu are “databrowse” and “Add new” (instead of seeing the 20 or so materials that I would expect to select from)

Anyone know if I accidentally disabled my material library by hitting a random hot-key or something?

Thanks for any help you might have!


Never mind. I think it just means that I have too many materials to display in the pop-up menu, so I have to select them from the alternate window.