Title: Call to undefined function
Last modified: August 20, 2016

---

# Call to undefined function

 *  [Peter](https://wordpress.org/support/users/hardpeter4u/)
 * (@hardpeter4u)
 * [13 years, 4 months ago](https://wordpress.org/support/topic/call-to-undefined-function-11/)
 * When trying to activate this plugin, I get the following error:
 * `Fatal error: Call to undefined function wp_get_current_user() in C:\xampp\htdocs\
   wordpress\wp-includes\capabilities.php on line 1281`
 * Any Ideas on this error? I added an include in capabilities.php (require_once(‘
   pluggable.php’);) Which caused another plugin to not function correctly.
 * Would appreciate some help in this matter.
 * Thank you,
    Peter
 * [http://wordpress.org/extend/plugins/ultimate-cms/](http://wordpress.org/extend/plugins/ultimate-cms/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [XYDAC](https://wordpress.org/support/users/deepakseth/)
 * (@deepakseth)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/call-to-undefined-function-11/#post-3321213)
 * Could you please provide WP version ?
 * -Xydac

Viewing 1 replies (of 1 total)

The topic ‘Call to undefined function’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/ultimate-cms_ce5c48.svg)
 * [Ultimate CMS](https://wordpress.org/plugins/ultimate-cms/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/ultimate-cms/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/ultimate-cms/)
 * [Active Topics](https://wordpress.org/support/plugin/ultimate-cms/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/ultimate-cms/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/ultimate-cms/reviews/)

 * 1 reply
 * 2 participants
 * Last reply from: [XYDAC](https://wordpress.org/support/users/deepakseth/)
 * Last activity: [13 years, 3 months ago](https://wordpress.org/support/topic/call-to-undefined-function-11/#post-3321213)
 * Status: not resolved