Ok, think it was 3.0.5, so i've applied the 3.0.5-3.0.7 changed files patch, no change, and now new registrants get:
[phpBB Debug] PHP Notice: in file /includes/captcha/captcha_factory.php on line 36: phpbb_captcha_factory::get_instance(./includes/captcha/plugins/_plugin.php) [function.get-instance]: failed to open stream: No such file or directory
[phpBB Debug] PHP Notice: in file /includes/captcha/captcha_factory.php on line 36: phpbb_captcha_factory::get_instance(./includes/captcha/plugins/_plugin.php) [function.get-instance]: failed to open stream: No such file or directory
[phpBB Debug] PHP Notice: in file /includes/captcha/captcha_factory.php on line 36: phpbb_captcha_factory::get_instance() [function.include]: Failed opening './includes/captcha/plugins/_plugin.php' for inclusion (include_path='.:/usr/local/php5/pear')
[phpBB Debug] PHP Notice: in file /includes/captcha/captcha_factory.php on line 38: call_user_func(::get_instance) [function.call-user-func]: First argument is expected to be a valid callback
Fatal error: Call to a member function init() on a non-object in /home/nurseryn/public_html/forum/includes/ucp/ucp_register.php on line 165
Would really appreciate some assistance on this one as I think all users are locke dout. I'm sure it's a simple fix for someone that knows what they're doing, but that isn't me i'm afraid.