Help! Category pages don't display

[eggmedia]

I'm running a clean install, latest version and the site needs to go live in one week! I set up category pages first, and they display fine. But if I add a product to the category, it no longer displays (see *http://kensprosounds.com/shop/) My log files look like this:

[03-Sep-2009 14:58:51] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/kenspro/public_html/shop/includes/languages/english.php:1401) in /home/kenspro/public_html/shop/includes/init_includes/init_templates.php on line 78
[03-Sep-2009 14:58:51] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/kenspro/public_html/shop/includes/languages/english.php:1401) in /home/kenspro/public_html/shop/includes/functions/functions_general.php on line 44
[03-Sep-2009 14:58:51] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/kenspro/public_html/shop/includes/languages/english.php:1401) in /home/kenspro/public_html/shop/includes/init_includes/init_templates.php on line 78
[03-Sep-2009 14:58:51] PHP Warning: Cannot modify header information - headers already sent by (output started at /home/kenspro/public_html/shop/includes/languages/english.php:1401) in /home/kenspro/public_html/shop/includes/functions/functions_general.php on line 44

I have checked /functions/functions_general.php and /init_includes/init_templates.php and the lines they refer to are just comments. I haven't modified these files. There is no extra space at either the beginning or end of the PHP document. Any help is appreciated!

[kobra]

I have checked /functions/functions_general.php and /init_includes/init_templates.php and the lines they refer to are just comments.

It is the "output started at" file that spawns the later file error

/shop/includes/languages/english.php:1401

What I have highlighted refers to line # and this file is only about 700 lines long

[eggmedia]

Thanks a lot! I read the threads concerning this but somehow didn't understand. That saves me a complete reinstallation!