Nonexistent email error

1

I just installed a message board on my server, but when users sign up they get this message;
error :: PHP ::

DEBUG MODE

Line : 234
File : emailer.php

Yet I turned off email notification, what is wrong?

// Did it work?
		if (!$result)
		{
			message_die(GENERAL_ERROR, 'error :: ' . (($this->use_smtp) ? 'SMTP' : 'PHP') . ' :: ' . $result, '', __LINE__, __FILE__);
		}

		return true;
	}

PS: line 234 is;
message_die(GENERAL_ERROR, 'error :: ’ . (($this->use_smtp) ? ‘SMTP’ : ‘PHP’) . ’ :: ’ . $result, ‘’, LINE, FILE);