alexklinghoffer on "[Plugin: All In One WP Security & Firewall] Receiving error when I try to unlock someone from blocked ip address"

I'm getting this error:

Warning: call_user_func() expects parameter 1 to be a valid callback, second array member is not a valid method in /home/alexk/public_html/wp-content/plugins/all-in-one-wp-security-and-firewall/admin/wp-security-user-login-menu.php on line 61

Any suggestions?

http://wordpress.org/extend/plugins/all-in-one-wp-security-and-firewall/