[Plugin: AJAXed WordPress] How to get quicktags to work?

I was hoping I could use this theme to get clickable quicktags (much like on here) but I’ve enabled everything and I don’t see anything different. I even copied the script from the source of a friend’s blog who seems to have it working, and I’ve got the buttons showing up…but clicking on them does nothing. It doesn’t insert the code. None of the enabled features seem to be working.

I’m using a custom theme, not the default one, but even when I switched to the default theme I saw no difference.

I even tried just uploading the quicktags folder to the plugins directory and still nothing.

Is there a trick I’m missing to get this working?