can't upload files (open_basedir restriction)

warning: is_file() [function.is-file]: open_basedir restriction in effect. File(/var/www/vhosts/blahblah.org/httpdocs/files/badaboum_arton3804-c95f9.jpg) is not within the allowed path(s): (/var/www/vhosts/blahblah.org/httpdocs:/tmp) in /var/www/vhosts/blahblah.org/drupal-6.13/sites/all/modules/fckeditor/fckeditor/editor/filemanager/connectors/php/commands.php on line 211.

http://blahblah.org/sites/all/modules/fckeditor/fckeditor/editor/sites/all/themes/amn/style-fck.css

http://blahblah.org/sites/all/modules/fckeditor/fckeditor/editor/fckeditor.html?InstanceName=oFCK_1&Toolbar=DrupalFiltered