Cannot modify header information - Groups

headers sent is usually empty lines in the code, lines indicated in the error
you must have 2 versions of files paired up, I have only seen this happen when some filess are 0003 and some are 0004,
I would comment/delete-test:
header('Content-type: text/html; charset=utf-8');

I tried to comment/ out the code but got this new error..

Parse error: syntax error, unexpected '/' in /home/girls/public_html/inc/design.inc.php on line 667

and could not open my site at all. I am not very good with php and not sure if the comment should look like this / or like this /*

I also tried deleting the code but once again could not access my site.

Then I tried uploading the design.inc.php file again from the 6.0.0005 patch in case it was corrupted. Then I tried uploading the same file from the previous patch .0004 but still get the original error...

Warning: Cannot modify header information - headers already sent by (output started at /home/girls/public_html/groups_browse.php:1) in /home/girls/public_html/inc/design.inc.php on line 667

Is is possible the duplicate file is being pulled from somewhere else?