I upgraded to the last rev, but the pligg captcha is always available in the admin menu
Available Captchas
* Pligg Default Captcha | Enable
* reCaptcha | Enable | Configure
* WhiteHat Method | Enable | Configure
* Math Question | In Use | Configure
and the whitecaptcha doesn't work, there is a problem with the image.
<img src="/modules/captcha/captchas/WhiteHat/CaptchaSecurityImages.php"/>
if i open the link i have this error
Fatal error: Call to undefined function: imagettfbbox() in /modules/captcha/captchas/WhiteHat/CaptchaSecurityImages.php on line 60