I am using the following the editable WordPress theme nebula-10
and have been trying to install the widget APOD Widget at http://www.digitalmeandering.com/?p=6
However when click on the sidebar widgets in the theme section of the dashboard I get the following error message.
Fatal error: Call to undefined function: wp_deregister_script() in /home/theimagi/public_html/blog/wp-content/plugins/widgets/widgets.php on line 204
Does this error relate to the widget or the theme I have selected and can someone please help me correct it