failure when deleting locked user

Hi

I’m getting this failure when i’m unlocking or deliting a locked user:

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

Best regards
Henrik

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