Unable to send an article through email

Hi everybody,

We use gk_twn2 template on www.studiotamani.org and we are unable to send articles through the email button. Error message in french:
Identifiant de sécurité invalide
(Invalid token)

I do not know if this error is due to captcha.

- Captcha has been activated and is know deactivated. (captcha is not displaying even when activated)
- Cache has been deactivated
- Attempts were made using a logged admin on frontend

cache / tmp and log directories are writeable

Thanks a lot

Hello,

Are you using the latest version of Joomla? I'm asking, because this feature is not overrided by our template so it must be a problem with Joomla core code.