Back up error.

[the cookie monster]

When i attempt to create a new back up in my Admin area i get this error. But if i press backspace, the back up is listed and looks fine (file size and date)

Can someone help explain what this error is?

 

 

Warning: exec() has been disabled for security reasons in /home/vet/public_html/shop/admin/backup.php on line 147

Warning: Cannot modify header information - headers already sent by (output started at /home/vet/public_html/shop/admin/backup.php:147) in /home/vet/public_html/shop/admin/includes/functions/general.php on line 22

[lostndazed]

http://www.oscommerce.info/kb/osCommerce/G...mon_Problems/15