Title: Error when Captcha enabled
Last modified: August 20, 2016

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# Error when Captcha enabled

 *  Resolved [babbsela](https://wordpress.org/support/users/babbsela/)
 * (@babbsela)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/error-when-captcha-enabled/)
 * I’d love to use the Captcha, but when I activate it, in addition to the captcha
   showing, this error displays:
 * Warning: call_user_func_array() [function.call-user-func-array]: First argument
   is expected to be a valid callback, ” was given in /home4/munged/public_html/
   wp-includes/plugin.php on line 170
 * What is causing this error, and how do I fix it?
 * [http://wordpress.org/extend/plugins/contact-form-plugin/](http://wordpress.org/extend/plugins/contact-form-plugin/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Author [bestwebsoft](https://wordpress.org/support/users/bestwebsoft/)
 * (@bestwebsoft)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/error-when-captcha-enabled/#post-3313102)
 * Hello babbsela,
 * Please provide the WordPress version and plugin version, which you are using.
 * Kind regards.
 *  Thread Starter [babbsela](https://wordpress.org/support/users/babbsela/)
 * (@babbsela)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/error-when-captcha-enabled/#post-3313103)
 * I apologize. I should have included that in the original post. I can’t remember
   which site I was trying to use this on, so it’s no longer relevant.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Error when Captcha enabled’ is closed to new replies.

 * ![](https://ps.w.org/contact-form-plugin/assets/icon-256x256.gif?rev=2565795)
 * [Contact Form by BestWebSoft - Advanced WP Contact Form Builder for WordPress](https://wordpress.org/plugins/contact-form-plugin/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/contact-form-plugin/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/contact-form-plugin/)
 * [Active Topics](https://wordpress.org/support/plugin/contact-form-plugin/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/contact-form-plugin/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/contact-form-plugin/reviews/)

## Tags

 * [contact-form](https://wordpress.org/support/topic-tag/contact-form/)
 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * 2 replies
 * 2 participants
 * Last reply from: [babbsela](https://wordpress.org/support/users/babbsela/)
 * Last activity: [13 years, 2 months ago](https://wordpress.org/support/topic/error-when-captcha-enabled/#post-3313103)
 * Status: resolved