[Plugin: W3 Total Cache] headers already sent on save changes

Hi,

When I click on the save changes button I get this error on screen:

Warning: Cannot modify header information - headers already sent by (output started at /public_html/wp-admin/admin-header.php:109) in /public_html/wp-content/plugins/w3-total-cache/inc/define.php on line 329

Take Care,

Will

http://wordpress.org/extend/plugins/w3-total-cache/