Fatal error: functions_gallery.php on line 1085

[WhatChaMissin]

I'm getting the following error;

Fatal error: Call to a member function on a non-object in /home/whatcham/public_html/forums/includes/functions_gallery.php on line 1085

The strange thing is that I'm getting that error when I click on one member's link in the " Total members that have visited the forum in the last 24 hours" section.

Everyone else's that I try is working fine. I even tried changing his member group and looking through his profile to see what's different but I can't figure it out.

Any help would be appreciated.

Thanks