[resolved] cron error

when cron runs this error is produced: any ideas for a fix?

warning: is_dir() [function.is-dir]: open_basedir restriction in effect. File(/tmp/mysql.sock) is not within the allowed path(s): (/home/emotznet:/usr/lib/php:/usr/local/lib/php:/tmp) in /home/emotznet/public_html/includes/file.inc on line 891.