Title: [Plugin: WP Post Corrector] Errors in admin area when activating plugin
Last modified: August 20, 2016

---

# [Plugin: WP Post Corrector] Errors in admin area when activating plugin

 *  [Oleksiy](https://wordpress.org/support/users/alexros/)
 * (@alexros)
 * [13 years, 7 months ago](https://wordpress.org/support/topic/plugin-wp-post-corrector-errors-in-admin-area-when-activating-plugin/)
 * When i activate this plugin i got this message on the top of admin area:
    Warning:
   Cannot modify header information – headers already sent by (output started at
   Z:\home\lab.lab\www\wp-includes\functions.php:2722) in Z:\home\lab.lab\www\wp-
   includes\option.php on line 563
 * Warning: Cannot modify header information – headers already sent by (output started
   at Z:\home\lab.lab\www\wp-includes\functions.php:2722) in Z:\home\lab.lab\www\
   wp-includes\option.php on line 564
    And
 * Notice: has_cap was called with an argument that is deprecated since version 
   2.0! Usage of user levels by plugins and themes is deprecated. Use roles and 
   capabilities instead. in Z:\home\lab.lab\www\wp-includes\functions.php on line
   2722
 * How can i remove that?
 * [http://wordpress.org/extend/plugins/wp-post-corrector/](http://wordpress.org/extend/plugins/wp-post-corrector/)

The topic ‘[Plugin: WP Post Corrector] Errors in admin area when activating plugin’
is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/wp-post-corrector.svg)
 * [WP Post Corrector](https://wordpress.org/plugins/wp-post-corrector/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-post-corrector/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-post-corrector/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-post-corrector/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wp-post-corrector/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wp-post-corrector/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [Oleksiy](https://wordpress.org/support/users/alexros/)
 * Last activity: [13 years, 7 months ago](https://wordpress.org/support/topic/plugin-wp-post-corrector-errors-in-admin-area-when-activating-plugin/)
 * Status: not resolved