[Plugin: Bird Feeder] stopped tweeting?

I am using WP 2.8.6 and the latest update of BirdFeeder.

I’ve used the plugin for several months with no issues, and it’s worked great – however, something recently broke – and new posts are no longer automatically sent to my Twitter feed. I’ve checked all the settings, and everything seems to be in working order, but still – every time I hit publish, nothing happens on Twitter.

Any ideas?

Thanks!