Fatal error: Call to undefined function wp_register_sidebar_widget() in …

I’ve just updated WordPress engine to v2.5. I played with it for a moment and was very happy about it until I got this error when I went to WordPress Dahsboard:

Fatal error: Call to undefined function wp_register_sidebar_widget() in /XXX/wp-admin/includes/dashboard.php on line 31

Luckily, I’ve found a very simple solution on Tom Raftery’s Social Media Blog. Tom, thanks for sharing with others!

1 Response to “Fatal error: Call to undefined function wp_register_sidebar_widget() in …”


  • I try to add several plugins on my blog-site and it came up with the error: Call to undefined function wp_register_sidebar_widget() in /home/michiah/public_html/wp-content/plugins/wp-live-chat-software-for-wordpress/livechat.php on line 197

    Somehow I think I just shut down my own site can you help me!!!

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