Admins Not Having Permission For The Add Admin Option In The ACP

Hi There. I am wondering why I get this error
You must be a super administrator to access this page. This can be configured in the file library/config.php.
When we used the account when I installed XenForo (My CEO), Please help me as this is very annoying and inconvenient
My Config.php is set out like this
$config['db']['host'] = 'No Way Are You Knowing This :D';
$config['db']['port'] = '3306';
$config['db']['username'] = 'No Way';
$config['db']['password'] = 'My password!';
$config['db']['dbname'] = 'My DB Name!@';
$config['superAdmins'] = 'SuperAdmin';
Please give me a hand on this as I cannot work it out I'm running 1.5.2 I think it is? I have XenPorta the addon and thats it