Title: Error after installing plugin
Last modified: August 21, 2016

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# Error after installing plugin

 *  [smg1773](https://wordpress.org/support/users/smg1773/)
 * (@smg1773)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/error-after-installing-plugin-1/)
 * I’m getting an error after I install the wpmu facebook addon. I have uninstalled
   several times and reinstalled by downloading then importing the php file from
   the download. Please help.
 * Fatal error: Class ‘Wdfb_OptionsRegistry’ not found in /home/samgri9/nitpickwithfriends.
   com/wp-content/plugins/wpmu-dev-facebook-addon.php on line 76
 * [https://wordpress.org/plugins/wpmu-dev-facebook-addon/](https://wordpress.org/plugins/wpmu-dev-facebook-addon/)

Viewing 1 replies (of 1 total)

 *  Thread Starter [smg1773](https://wordpress.org/support/users/smg1773/)
 * (@smg1773)
 * [12 years, 4 months ago](https://wordpress.org/support/topic/error-after-installing-plugin-1/#post-4606621)
 * I have also uploaded the download and it still fails. It’s deactivated now, but
   it was active after installation. Still get this error.

Viewing 1 replies (of 1 total)

The topic ‘Error after installing plugin’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/wpmu-dev-facebook-addon.svg)
 * [WPMU Ultimate Facebook Addon](https://wordpress.org/plugins/wpmu-dev-facebook-addon/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wpmu-dev-facebook-addon/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wpmu-dev-facebook-addon/)
 * [Active Topics](https://wordpress.org/support/plugin/wpmu-dev-facebook-addon/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/wpmu-dev-facebook-addon/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/wpmu-dev-facebook-addon/reviews/)

 * 1 reply
 * 1 participant
 * Last reply from: [smg1773](https://wordpress.org/support/users/smg1773/)
 * Last activity: [12 years, 4 months ago](https://wordpress.org/support/topic/error-after-installing-plugin-1/#post-4606621)
 * Status: not resolved