WARNING when I add a product

Oh oh this sounds bad- when I add a product to one of my categories
and then later click on the category in my shop,a white page opens with this message:

Warning: Cannot modify header information - headers already sent by (output started at /home/pinshop1/public_html/includes/languages/english/index.php:117) in /home/pinshop1/public_html/includes/functions/functions_general.php on line 44

In my admin/Configuration/Index Listing I see the following:

Show New Products on Main Page - Errors and Missing Products Page
Show Featured Products on Main Page - Errors and Missing Products Page
Show Special Products on Main Page - Errors and Missing Products Page
Show Upcoming Products on Main Page - Errors and Missing Products Page

How did this happen?Anyone has an idea how I can fix this??
Please help-thank you SO much!