Viewing IP Address Error

[GoTTi]

I am getting this when I view a IP address:

Warning: Address is not a valid IPv4 or IPv6 address in /home/SITE/public_html/forums/admin/user.php on line 1283

I can't find any info about it...any1 know of this error and what it is caused from?

[Kriek]

I get that error all the time when searching for IP address by User Name :ermm:

Make sure IP logging is ON in the ACP