Title: [Plugin: Events Manager] Fatal error
Last modified: August 20, 2016

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# [Plugin: Events Manager] Fatal error

 *  [Sea Jay](https://wordpress.org/support/users/jcollier/)
 * (@jcollier)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-fatal-error-3/)
 * After changing network settings, I clicked on “Update Blogs” and received this
   error:
 * Fatal error: Cannot redeclare em_update_required_notification() (previously declared
   in /home/XXX/public_html/wp-content/plugins/events-manager/em-install.php:10)
   in /home/XXX/public_html/wp-content/plugins/events-manager/em-install.php on 
   line 9
 * WP 3.3.1, BP 1.5.3.1, EM 5.0.42.
 * [http://wordpress.org/extend/plugins/events-manager/](http://wordpress.org/extend/plugins/events-manager/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [agelonwl](https://wordpress.org/support/users/angelonwl/)
 * (@angelonwl)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-fatal-error-3/#post-2507567)
 * Can I know what changes that you did? or if you can provide a step by step guide
   which can help to simulate the problem.
 *  Plugin Author [Marcus (aka @msykes)](https://wordpress.org/support/users/netweblogic/)
 * (@netweblogic)
 * [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-fatal-error-3/#post-2507584)
 * what did you upgrade from originally? If you upgraded from an earlier v4, you
   may run into issues if you didn’t upgrade your sub-blogs when updating EM.
 * Try two things:
    1. Reset each blog’s dbem_version to 4.9 in their wpx_options
   tables 2. Install the latest v4 plugin, visit your blog admins, then install 
   v5 again.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘[Plugin: Events Manager] Fatal error’ is closed to new replies.

 * ![](https://ps.w.org/events-manager/assets/icon-256x256.png?rev=1039078)
 * [Events Manager - Calendar, Bookings, Tickets, and more!](https://wordpress.org/plugins/events-manager/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/events-manager/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/events-manager/)
 * [Active Topics](https://wordpress.org/support/plugin/events-manager/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/events-manager/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/events-manager/reviews/)

 * 2 replies
 * 3 participants
 * Last reply from: [Marcus (aka @msykes)](https://wordpress.org/support/users/netweblogic/)
 * Last activity: [14 years, 4 months ago](https://wordpress.org/support/topic/plugin-events-manager-fatal-error-3/#post-2507584)
 * Status: not resolved