When I try to upload an image (Insert/Edit image button> Browse Server button >choose a file, click Upload), nothing happens. No errors, but the file does not appear. So, I close the browser and image dialogs. After that, when I save the node (this is Drupal), this is the error I get:
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.