[Plugin: Toggler. The Ultimate Toggling Machine.] Toggler abruptly stopped working

I’ve been using Toggler without any problems for a few weeks. Today, however, all of the toggles on my site have abruptly stopped working, and I cannot create any new ones. All the internal toggle content is exposed. I haven’t touched any of the toggles since they were last functional. Have there been any changes to the plugin?

http://wordpress.org/extend/plugins/toggler/