I have a rather big problem.
After I added to single.php a code for a plugin, I can't access anymore my dashboard, the message I get in a white page is this one:
"Warning: Cannot modify header information - headers already sent by (output started at /home/content/88/7487688/html/blog/wp-content/plugins/sexybookmarks/includes/public.php:1054) in /home/content/88/7487688/html/blog/wp-includes/pluggable.php on line 881"
As you can imagine this is a huge problem for me, I do hope someone knows how to sort this out!!!