author_pane error : "ip_address" does not exist

With version 1.0 beta2 (and beta1) I get this error in nodes:

user warning: Statistic "ip_address" does not exist. in /var/www/vhost/pinomillershow.org/home/html/sites/all/modules/user_stats/user_stats.module on line 167.
user warning: Statistic "ip_address" does not exist. in /var/www/vhost/pinomillershow.org/home/html/sites/all/modules/user_stats/user_stats.module on line 167.
user warning: Statistic "ip_address" does not exist. in /var/www/vhost/pinomillershow.org/home/html/sites/all/modules/user_stats/user_stats.module on line 167.
...

Only users without permission to see IP get this error.

Since there's one error line for each node comment, and "ip_address" is shown in the author_pane I've thougth that's an author_pane integration problem.

Furthermore, I've tried to change line 18 in "user_stats.author-pane.inc" setting $ip = ""
and everything went well (obviously excluding the ip ).

I hope this help. ;)

bye