Warning: Cannot modify header information (Site is DEAD)

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In an effort to address the "Checking For Updates" infinite spinning issue I attempted to add the ENABLE_NEWSFLOW_OVERLAY define statement to my site.php file per the instructions located athttp://www.concrete5.org/documentation/how-tos/developers/white-lab...

When I try to go to my site I now get the error: define('ENABLE_NEWSFLOW_OVERLAY', false); define('ENABLE_NEWSFLOW_OVERLAY', false);
Warning: Cannot modify header information - headers already sent by (output started at /home1/shilohf1/public_html/config/site.php:12) in /home1/shilohf1/public_html/packages/jbx_force_ssl/models/jbx_force_ssl.php on line 47

Warning: Cannot modify header information - headers already sent by (output started at /home1/shilohf1/public_html/config/site.php:12) in /home1/shilohf1/public_html/packages/jbx_force_ssl/models/jbx_force_ssl.php on line 48

When I go back into my site.php file and remove the line I added and try to go to my site I now get the following error:

Warning: Cannot modify header information - headers already sent by (output started at /home1/shilohf1/public_html/config/site.php:12) in /home1/shilohf1/public_html/packages/jbx_force_ssl/models/jbx_force_ssl.php on line 47

Warning: Cannot modify header information - headers already sent by (output started at /home1/shilohf1/public_html/config/site.php:12) in /home1/shilohf1/public_html/packages/jbx_force_ssl/models/jbx_force_ssl.php on line 48

The line I added looked like this: define('ENABLE_NEWSFLOW_OVERLAY', false);

Our site is now dead. I can't access it at all. All attempts to access the site results in the above error message. Any suggestions on getting the site back up is most appreciated. Thank you.