It also modifies by adding another to prevent you from switching themes.
Warning: Cannot modify header information – headers already sent by (output started at /home/*****/public_html/*****/wp-content/themes/carton/functions.php:446) in /home/****/public_html/*****/wp-includes/pluggable.php on line 899
Hmmmm … Looks like Photum is some kind of malware or something .. I encountered the same problem after using photum.
Another case:
http://ww.wp.xz.cn/support/topic/problem-occurred-right-after-i-install-some-themes
Never Never Never install the Photum theme!!
