I installed on joomla 1.7 contact form. On my local host everything was working fine, but after I install it on my web-site - captcha is not working - there is no captcha shown...there is a button to refresh captcha, and "alt" for captcha shown instead of it.
Is this problem with my component or with the server?
OK, here was the same problem as with Rokgallery: server did not had the required drivers (PHP MySQL PDO driver and the PHP Sqlite PDO driver).
Problem solved.