Hi,

We used to have a Joomla website that had a phpbb board connected through Rokbridge. Both were using Rocket Theme templates.
We decided to give up the Joomla part of the website and we installed a new board on the domain root and imported the old database in order to recover posts and users.
We had several issues that we managed to fixed but still have one problem that couldn't find a fix until now. From the ACP when we try to access the settings for spam we get the following errors:

[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 88: call_user_func

(phpbb3_recaptcha::is_available) [function.call-user-func]: First argument is expected to be a valid callback
[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 94: call_user_func

(phpbb3_recaptcha::get_name) [function.call-user-func]: First argument is expected to be a valid callback
[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 88: call_user_func

(phpbb3_captcha_nogd::is_available) [function.call-user-func]: First argument is expected to be a valid callback
[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 94: call_user_func

(phpbb3_captcha_nogd::get_name) [function.call-user-func]: First argument is expected to be a valid callback
[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 88: call_user_func

(phpbb3_captcha_qa::is_available) [function.call-user-func]: First argument is expected to be a valid callback
[phpBB Debug] PHP Warning: in file /includes/captcha/captcha_factory.php on line 94: call_user_func

(phpbb3_captcha_qa::get_name) [function.call-user-func]: First argument is expected to be a valid callback

The problem was debated on both the phpbb.com and phpbb.ro forums but nobody could help us and finally we were advised to report it as a bug.
The website url is www.forum-vanatoare.ro