Header errors on shared hosting environment

All,

I’been trying to delploy a site to a shared hosting environment provided by the client. The same exact code and db work fine on my development and staging servers. But when i deploy it on the clients server and try to open the manager page i get this:

Warning: Cannot modify header information - headers already sent by (output started at /home/inhouse/domains/inhouse.co.th/public_html/manager/includes/config.inc.php:1) in /home/inhouse/domains/inhouse.co.th/public_html/manager/index.php on line 148

Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/inhouse/domains/inhouse.co.th/public_html/manager/includes/config.inc.php:1) in /home/inhouse/domains/inhouse.co.th/public_html/manager/includes/config.inc.php on line 60

Warning: Cannot modify header information - headers already sent by (output started at /home/inhouse/domains/inhouse.co.th/public_html/manager/includes/config.inc.php:1) in /home/inhouse/domains/inhouse.co.th/public_html/manager/includes/config.inc.php on line 74

It is a shared hosting account and logic dictates that there’s something wrong with the environment’s settings. Unfortunately the hosting company is less then helpful and i need to tell them what’s wrong in order for them to fix it.

I saw a couple of posts with similar problems but the described solutions are either not applicable or didn’t work. At this point i’m at a loss.

the problem can be seen at http://inhouse.co.th/manager/

Any help would be greatly appreciated.

That looks very much like an extra linefeed or something like that before the opening <?php tag in the config.inc.php file. The errors are saying that the config.inc.php file has already sent something on line 1, most probably an error of some kind.