I'm setting up a website for a customer who is using another web host than I usually use. I'm not able to make it run, get this message:
Warning: Cannot modify header information - headers already sent by (output started at /rgt/207/72911/www/wp-config.php:1) in /rgt/207/72911/www/wp-includes/pluggable.php on line 881
I haven't had this problem before. I don't have Dreamweaver, so I'm not able to see the line number the message is refering to.
What to do?