Title: [Plugin: Multiple content blocks] Fatal error: Call to undefined function wp_editor()
Last modified: August 20, 2016

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# [Plugin: Multiple content blocks] Fatal error: Call to undefined function wp_editor()

 *  [marklanham](https://wordpress.org/support/users/marklanham/)
 * (@marklanham)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/)
 * I have installed the plugin as instructed however when I switch to the Page Editor
   the message in the Multiple Content Block says:
 * “Fatal error: Call to undefined function wp_editor() in /Applications/XAMPP/xamppfiles/
   htdocs/my_site/wp-content/plugins/multiple-content-blocks/multiple_content.php
   on line 143”
 * Any ideas why?
 * [http://wordpress.org/extend/plugins/multiple-content-blocks/](http://wordpress.org/extend/plugins/multiple-content-blocks/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Thread Starter [marklanham](https://wordpress.org/support/users/marklanham/)
 * (@marklanham)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/#post-2484235)
 * I have switched to version 2.1 and this seems to be working ok now.
 *  [paxell](https://wordpress.org/support/users/paxell/)
 * (@paxell)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/#post-2484435)
 * I have version 2.2.1 and having this same problem.. can I ask where did you get
   the older version?
 *  Thread Starter [marklanham](https://wordpress.org/support/users/marklanham/)
 * (@marklanham)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/#post-2484479)
 * I downloaded it from the older versions page:
    [http://wordpress.org/extend/plugins/multiple-content-blocks/download/](http://wordpress.org/extend/plugins/multiple-content-blocks/download/)
 *  [3ring](https://wordpress.org/support/users/3ring/)
 * (@3ring)
 * [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/#post-2484558)
 * [@marklanham](https://wordpress.org/support/users/marklanham/) that fix to old
   revision worked for me too. Thanks. MCB 2.2.1 has been causing me weird errors
   of all types on many sites. Going back to the old version…

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘[Plugin: Multiple content blocks] Fatal error: Call to undefined function
wp_editor()’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/multiple-content-blocks.svg)
 * [Multiple content blocks](https://wordpress.org/plugins/multiple-content-blocks/)
 * [Support Threads](https://wordpress.org/support/plugin/multiple-content-blocks/)
 * [Active Topics](https://wordpress.org/support/plugin/multiple-content-blocks/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/multiple-content-blocks/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/multiple-content-blocks/reviews/)

## Tags

 * [fatal error](https://wordpress.org/support/topic-tag/fatal-error/)

 * 4 replies
 * 3 participants
 * Last reply from: [3ring](https://wordpress.org/support/users/3ring/)
 * Last activity: [14 years, 2 months ago](https://wordpress.org/support/topic/plugin-multiple-content-blocks-fatal-error-call-to-undefined-function-wp_editor/#post-2484558)
 * Status: not resolved