Anti-Splog Additional Signup choices don't work (Asirra, Re-Captcha)

Anti-Splog is installed correctly I think — it is suggesting blogs, and allowing the choice of additional protection. The Admin Questions work as intended, but the Re-Captcha and Asirra options are always resulting in 100% fail. I’m not that bad at spelling or picking out cats from dogs. I do have a correct anti-splog api as well as an active and correctly entered set of recaptcha keys.