warning message

Hi guys, got this warning after updating a number of your plugins, it appears on top of every page. Can you help? http://www.happinessis.co.za -

Warning: is_dir() [function.is-dir]: open_basedir restriction in effect. File(/usr/www/users/happinm/wp-content/uploads) is not within the allowed path(s): (/home/happines:disappointed:usr/lib/php:disappointed:usr/php4/lib/php:disappointed:usr/local/lib/php:disappointed:usr/local/php4/lib/php:disappointed:tmp) in /home/happines/public_html/wp-content/plugins/wpmu-dev-seo/wds-files/wds-sitemaps/wds-sitemaps.php on line 457