When I attempt to insert a citation or specify a database to use as a bibliography, I get a message that I need to "start" the "reference system" "manually":

I have no idea what a references system is, let alone how to start one ("manually" or otherwise). I've followed all of the steps in the documentation, to no avail.
If it matters, I'm running OS 10.8.2, using a BibTeX file (which I've used without issues in other applications, e.g. LyX) for my references, and I have a fill MacTeX installation in the standard locations on my machine.
UPDATE: It matters.

