Title: [Plugin: CKEditor For WordPress] Update or preview causes JavaScript Error
Last modified: August 20, 2016

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# [Plugin: CKEditor For WordPress] Update or preview causes JavaScript Error

 *  [ncrause](https://wordpress.org/support/users/ncrause/)
 * (@ncrause)
 * [13 years, 8 months ago](https://wordpress.org/support/topic/plugin-ckeditor-for-wordpress-update-or-preview-causes-javascript-error/)
 * When attempting to update or preview a page, JavaScript error is triggered:
 * `
    Uncaught TypeError: Cannot call method 'indexOf' of undefined ckeditor.config.
   js:51
 * Error occurs in Chrome and IE (haven’t tested others).
 * [http://wordpress.org/extend/plugins/ckeditor-for-wordpress/](http://wordpress.org/extend/plugins/ckeditor-for-wordpress/)

The topic ‘[Plugin: CKEditor For WordPress] Update or preview causes JavaScript 
Error’ is closed to new replies.

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 * [CKEditor for WordPress](https://wordpress.org/plugins/ckeditor-for-wordpress/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/ckeditor-for-wordpress/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/ckeditor-for-wordpress/)
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 * 0 replies
 * 1 participant
 * Last reply from: [ncrause](https://wordpress.org/support/users/ncrause/)
 * Last activity: [13 years, 8 months ago](https://wordpress.org/support/topic/plugin-ckeditor-for-wordpress-update-or-preview-causes-javascript-error/)
 * Status: not resolved