I'm having difficulty with the following error messages:

warning: Invalid argument supplied for foreach() in /home/shikko/www/includes/tablesort.inc on line 160.

warning: Invalid argument supplied for foreach() in /home/shikko/www/includes/tablesort.inc on line 198.

warning: Invalid argument supplied for foreach() in /home/shikko/www/includes/theme.inc on line 639.

I'm using the latest version of drupal and this is what I get when I click on issues on the left navigation under projects. Can anyone help? I've searched almost everywhere.

Thanks! Shawn