I just upgraded to v3.7. I have 2 browsers open - Opera and Chrome - and I'm logged into the site with the same admin account on the both.
In Chrome I see this:
Number of users currently logged into your site (including you) is: 2
Go to the Logged In Users menu to see more details
When I go there I get this:
Warning: call_user_func() expects parameter 1 to be a valid callback, second array member is not a valid method in /path/wp-content/plugins/all-in-one-wp-security-and-firewall/admin/wp-security-user-login-menu.php on line 69
https://wordpress.org/plugins/all-in-one-wp-security-and-firewall/
