On a scale of 1 to 10, the "title" makes 0 sense.

If I import a mesh I've made, go to pose mode for the skeleton, press I, add a keyframe for "LocRot", and then go down to change the export directory for the "animation" from "anims" to ".", it clears out the "Source Engine Exportables" content, and grays out the "Export" button in "Source Engine Export", making me unable to export anything (until I reload the Blend file or start a new session or something). That means I don't remember what I have to type to make animations export in the directory I choose in "Source Engine Exportables". Either way, it's still a bug.