Title: Error: function.call-user-func-array
Last modified: August 20, 2016

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# Error: function.call-user-func-array

 *  [webespresso](https://wordpress.org/support/users/webespresso/)
 * (@webespresso)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/error-functioncall-user-func-array/)
 * We keep getting this message: Warning: call_user_func_array() [function.call-
   user-func-array]: First argument is expected to be a valid callback, ‘add_my_stylesheet’
   was given in /home/content/54/8624054/html/wp-includes/plugin.php on line 405
 * on our home page [http://www.massunitedfc.com](http://www.massunitedfc.com)
 * Any help would be appreciated on how to get rid of this.
    Thank you.
 * This is a genesis theme, however this error showed up around the time of the 
   wordpress upgrade.

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/error-functioncall-user-func-array/#post-2597608)
 * Have you tried:
 * – deactivating **all** plugins to see if this resolves the problem. If this works,
   re-activate the plugins one by one until you find the problematic plugin(s).
 * – switching to the Twenty Eleven theme to rule out any theme-specific problems.
 * – [resetting the plugins folder](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F)
   by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause
   problems.
 *  Thread Starter [webespresso](https://wordpress.org/support/users/webespresso/)
 * (@webespresso)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/error-functioncall-user-func-array/#post-2597611)
 * I will give it a try…thanks
 *  Thread Starter [webespresso](https://wordpress.org/support/users/webespresso/)
 * (@webespresso)
 * [14 years, 3 months ago](https://wordpress.org/support/topic/error-functioncall-user-func-array/#post-2597619)
 * That worked! Thank you so much.
    Turned out to be an error with the “Simple Sitemap”
   plugin. It just had an update and after that, it did not play well with others
   🙂

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Error: function.call-user-func-array’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [webespresso](https://wordpress.org/support/users/webespresso/)
 * Last activity: [14 years, 3 months ago](https://wordpress.org/support/topic/error-functioncall-user-func-array/#post-2597619)
 * Status: not resolved

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