Title: wordpress MU and "site-by-site" activation results in missing sidebard.
Last modified: August 20, 2016

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# wordpress MU and "site-by-site" activation results in missing sidebard.

 *  Resolved [krembo99](https://wordpress.org/support/users/krembo99/)
 * (@krembo99)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/wordpress-mu-problem/)
 * On wordpress MU, if the plugin is activated on SOME SITES and not on globally
   on all, it will resolve in :
 * 1 – an error on admin pages (widgets.php and sometimes index.php) :
 * Fatal error: Call to undefined function dynamic_sidebar() in /path/to/wp/wp-admin/
   includes/widgets.php on line 80
 * 2 – Error on Front-side :
    error: Call to undefined function dynamic_sidebar()
   in /path/to/wp/wp-content/themes/nameoftheme/sidebar.php on line XX
 * This is essentially the same error (missing function dynamic_sidebar() ) that
   probably occurs because the plugin at some point is requesting this function 
   too early ?
 * I can confirm that this happens on ALL themes installations (also wp default 
   ones, and hence not a theme problem).
    The sites where this plugin was activated
   will not have any problems, where the sites it was NOT activated will result 
   with the above mentioned errors.
 * After activating the plugin as default for all sites this problem is fixed , 
   but it is only a temp solution because there should be an option, like with most
   plugins, to activate on a site-to-site basis.
 * [http://wordpress.org/extend/plugins/widgetize-pages-light/](http://wordpress.org/extend/plugins/widgetize-pages-light/)

Viewing 1 replies (of 1 total)

 *  Plugin Author [OTWthemes](https://wordpress.org/support/users/otwthemes/)
 * (@otwthemes)
 * [13 years, 3 months ago](https://wordpress.org/support/topic/wordpress-mu-problem/#post-3468223)
 * Hi there,
 * The plugin has not been testes on WPMU yet and we currently do not support it.
   It is on the list and we will have support for MU. I can’t give a release date
   for that yet.
 * OTWthemes

Viewing 1 replies (of 1 total)

The topic ‘wordpress MU and "site-by-site" activation results in missing sidebard.’
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 * ![](https://s.w.org/plugins/geopattern-icon/widgetize-pages-light_0a96e3.svg)
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## Tags

 * [multisite](https://wordpress.org/support/topic-tag/multisite/)
 * [wordpress-mu](https://wordpress.org/support/topic-tag/wordpress-mu/)

 * 1 reply
 * 2 participants
 * Last reply from: [OTWthemes](https://wordpress.org/support/users/otwthemes/)
 * Last activity: [13 years, 3 months ago](https://wordpress.org/support/topic/wordpress-mu-problem/#post-3468223)
 * Status: resolved