Errors on some pages but not all

I know this is something easy but for the life of me can't find the answer. I installed the latest upgrade and installed the Future Zen template and got everything working I thought.

Everything works fine, pages load etc. but every now and then I'll hit a category page that returns this message:
Warning: Cannot modify header information - headers already sent by (output started at /home/ktsadded/public_html/Zen/includes/languages/english/index.php:63) in /home/ktsadded/public_html/Zen/includes/functions/functions_general.php on line 41

That error comes back from this SubCategory page: http://ktsaddedvalues.com/Zen/index.php?main_page=index&cPath=158_180

Other SubCategories in the same Category load fine:
http://ktsaddedvalues.com/Zen/index.php?main_page=index&cPath=158_273

Can anybody head me in the right direction please?

Peek at the file:
includes/languages/english/index.php

And see if you have space(s) or blank line(s) after the last ?> on the bottom of the file ...

If so, edit in a good text editor ... not your Control Panel or a Word Processor ... and remove the extra space(s) or blank line(s) and reload it to your site ...

Gosh Ajeh, Thanks!

Says something for intelligence there, you can see spaces on a blank sheet!

Worked the best and I'll not be doing anymore 3AM changes.

Such is the life of an elf ... :cool:

Glad you are back up and running happily ...

By the way- The above error and many other common ones are listed in the FAQ section along with fixes - Just in case we aren't available to answer personally. :wink2:

Sorry Kim,

I always search 1st before posting but didn't put in the right terms I guess. I'll make sure I'm more thorough the next time.