Similar issue after Responsive theme update followed by failed WP update …. cannot get into backend 🙁
error from http://(mydomain/sub)/wp-admin/
“Warning: Cannot modify header information – headers already sent by (output started at /websites/123reg/LinuxPackage22/al/lb/ri/(mydomain)/public_html/abc/wp-content/themes/responsive/core/includes/functions-admin.php:110) in /websites/123reg/LinuxPackage22/al/lb/ri/(mydomain)/public_html/abc/wp-includes/pluggable.php on line 1210”
Do I need to edit my files manually through FTP or somesuch (All help appreciated – I’m a WP noob!)
