Missing tweet posts?

So…I have Twitter Tools installed, and it was set to auto-post a daily digest of my tweets, and that’s not happening. (Last tweet post was on September 18.) All the settings look right, and this blog still has access rights in Twitter. What gives?

(Looks like last update to either WordPress or Twitter Tools can break stuff. Solution is apparently to revoke and reissue access. I’ve tried that, and we’ll see how it goes.)