TF2 Maps not showing up

So, yesterday, it was all fine and dandy; but today, I open up Garry’s Mod to discover…no Team Fortress 2 map folder, or maps. It won’t even let me load any of the saves made in TF2 maps. So, not that I use these maps often, but it’s annoying me. Any suggestions?

Here’s what it looks like:

–Eli