Error message

• Warning: Cannot modify header information - headers already sent by (output started at /home/rockpool/public_html/makelifeclick.com/includes/common.inc:2489) in drupal_send_headers() (line 1048 of /home/rockpool/public_html/makelifeclick.com/includes/bootstrap.inc).
• PDOException: SQLSTATE[42S02]: Base table or view not found: 1146 Table 'rockpool_makelifeclick.file_managed' doesn't exist: SELECT fid FROM {file_managed} WHERE status & :permanent1 <> :permanent2 AND timestamp < :timestamp; Array ( [:permanent1] => 1 [:permanent2] => 1 [:timestamp] => 1337499168 ) in system_cron() (line 2799 of /home/rockpool/public_html/makelifeclick.com/modules/system/system.module).