I downloaded a very cool theme for this blog and luckily, I successfully installed it in my local instance of WordPress. Satisfying the OC in me, I immediately do some minor twicking to further personalize my page. I tested the page’s comment engine, posting, plugin and widget capabilities but was repeatedly bombarded with this error every time I click a button that causes the page to reload:
Warning: Cannot modify header information - headers already sent by (output started at / my_site/wp-content/themes/new_theme/functions.php:2) in /my_site /wp-includes/pluggable.php on line 694