Title: Error Warning 'Warning :  call_user_func_array() [function.call-user-func-array.
Last modified: August 20, 2016

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# Error Warning 'Warning : call_user_func_array() [function.call-user-func-array.

 *  Resolved [v8s_uk](https://wordpress.org/support/users/v8s_uk/)
 * (@v8s_uk)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/)
 * I’ve been getting this warning displaying at the top of each page on the website
   since installing and activating the plugin. Running version 1.9.4 of the plugin
   and 3.5.1 of wordpress.
 * The error reads ”Warning : call_user_func_array() [function.call-user-func-array.]:
   First argument is expected to be a valid callback, ‘scabn_Display::scabn_head’
   was given in /home/(my directory)/public_html/sonic/wp-includes/plugin.php on
   line 406′
 * Anyone know why its throwing this error?
 * Thank you
 * [http://wordpress.org/extend/plugins/simple-cart-buy-now/](http://wordpress.org/extend/plugins/simple-cart-buy-now/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [bluey80](https://wordpress.org/support/users/bluey80/)
 * (@bluey80)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3507897)
 * Are you using your own theme / template? If so, can you switch (in SCABN’s settings)
   to default and see if that makes a difference? I’m running WP 3.5.1 with SCABN
   1.9.4 and don’t see this error, so maybe it is related to the theme.
 *  Plugin Author [bluey80](https://wordpress.org/support/users/bluey80/)
 * (@bluey80)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3507900)
 * Actually, try 1.9.5 — I just changed how the display class is loaded. Don’t know
   why I’m not getting an error and you are, but this may fix it.
 *  Thread Starter [v8s_uk](https://wordpress.org/support/users/v8s_uk/)
 * (@v8s_uk)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3507906)
 * Thanks for the reply bluey, I’ve just downloaded and tested 1.9.5 and the error
   has now gone 😀 so far so good. Much appreciated.
 * Thanks again
 *  [raquelm](https://wordpress.org/support/users/raquelm/)
 * (@raquelm)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3508318)
 *  [raquelm](https://wordpress.org/support/users/raquelm/)
 * (@raquelm)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3508319)

Viewing 5 replies - 1 through 5 (of 5 total)

The topic ‘Error Warning 'Warning : call_user_func_array() [function.call-user-func-
array.’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/simple-cart-buy-now.svg)
 * [Simple Cart & Buy Now](https://wordpress.org/plugins/simple-cart-buy-now/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/simple-cart-buy-now/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/simple-cart-buy-now/)
 * [Active Topics](https://wordpress.org/support/plugin/simple-cart-buy-now/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/simple-cart-buy-now/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/simple-cart-buy-now/reviews/)

 * 5 replies
 * 3 participants
 * Last reply from: [raquelm](https://wordpress.org/support/users/raquelm/)
 * Last activity: [13 years, 2 months ago](https://wordpress.org/support/topic/error-warning-warning-call_user_func_array-functioncall-user-func-array/#post-3508319)
 * Status: resolved