For some reason the AJAX feature of Contact Form 7 isn't working on my site, perhaps because I'm using an outdated version of Atahualpa. I'm not overly concerned about not having AJAX, but the non-AJAX message for the CAPTCHA field comes out as "The code your entered is incorrect." - I've been spending far too long searching for this text in order to correct it, but to no avail. How can I fix this embarrassing typo? Is there any way to customize the text of this (and other messages)?
Thanks,
Shi.