Title: Cannot modify header information
Last modified: August 19, 2016

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# Cannot modify header information

 *  [OthelloBloke](https://wordpress.org/support/users/othellobloke/)
 * (@othellobloke)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/)
 * Hi…
 * Needless to say I’m LOVING the Wordbook plugin. It works, but upon hitting ‘Publish’,
   I get a white screen with the following error:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/wp-includes/post-template.php:79) in /home/*******/
   public_html/wp-includes/pluggable.php on line 390
 * Any help would be GREATLY appreciated 🙂
 * [http://wordpress.org/extend/plugins/wordbook/](http://wordpress.org/extend/plugins/wordbook/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Thread Starter [OthelloBloke](https://wordpress.org/support/users/othellobloke/)
 * (@othellobloke)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698357)
 * Bump… Anyone?
 *  [Just Thomas Misund](https://wordpress.org/support/users/dnusim/)
 * (@dnusim)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698417)
 * This error message typically appears when a script tries to do a PHP Redirect
   in the middle of (as opposite to “in the beginning of”) an output. I don’t know
   the specific plugin…
 *  [Kafkaesqui](https://wordpress.org/support/users/kafkaesqui/)
 * (@kafkaesqui)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698419)
 * If this is only occuring when the WordBook plugin is activated on your blog, 
   then your first step is to check (all) the php files for that plugin and make
   sure this:
 *     ```
       <?php
       ```
   
 * is the very first line in each, and this:
 *     ```
       ?>
       ```
   
 * is the very last. That means no empty lines or spaces before (`<?php`) or after(`?
   >`). For more, see:
 * [http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F)
 *  Thread Starter [OthelloBloke](https://wordpress.org/support/users/othellobloke/)
 * (@othellobloke)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698538)
 * I checked the wordbook plugin, and the ending php tag was missing, and there 
   were spaces after some of them in the files so I corrected that.
 * The error still occurred, so i corrected that in the file mentioned in the error
   and still no go.
 * The line the error mentions has this on it:
 *  $content = str_replace(‘]]>’, ‘]]>’, $content);
 * Any ideas?
 *  Thread Starter [OthelloBloke](https://wordpress.org/support/users/othellobloke/)
 * (@othellobloke)
 * [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698573)
 * bump. anyone?

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Cannot modify header information’ is closed to new replies.

 * 5 replies
 * 3 participants
 * Last reply from: [OthelloBloke](https://wordpress.org/support/users/othellobloke/)
 * Last activity: [18 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-6-2/#post-698573)
 * Status: not resolved

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