MyBB Community Forums

I installed the new MyBB version earlier to my site http://ctooniverse.com/forum/member.php?action=register
But whenever anyone tries to register they get a Internal Error page pop up what is causing this and how can I fix it?

Go to: AdminCP > Templates > Your theme's templates > Member Templates > member_register > and find;

{$captcha}

and Change it into;

{$hiddencaptcha}

I just edited that but its still showing the same issue

EDIT: it now works many thanks