Title: [Plugin: Theme Updater] error on activation
Last modified: August 20, 2016

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# [Plugin: Theme Updater] error on activation

 *  [Paul de Wouters](https://wordpress.org/support/users/pauldewouters/)
 * (@pauldewouters)
 * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-theme-updater-error-on-activation/)
 * get this error on activation:
    Fatal error: Cannot redeclare class Plugin_Upgrader
   in /…/wp-admin/includes/class-wp-upgrader.php on line 631
 * [http://wordpress.org/extend/plugins/theme-updater/](http://wordpress.org/extend/plugins/theme-updater/)

The topic ‘[Plugin: Theme Updater] error on activation’ is closed to new replies.

 * ![](https://s.w.org/plugins/geopattern-icon/theme-updater.svg)
 * [Theme Updater](https://wordpress.org/plugins/theme-updater/)
 * [Support Threads](https://wordpress.org/support/plugin/theme-updater/)
 * [Active Topics](https://wordpress.org/support/plugin/theme-updater/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/theme-updater/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/theme-updater/reviews/)

 * 0 replies
 * 1 participant
 * Last reply from: [Paul de Wouters](https://wordpress.org/support/users/pauldewouters/)
 * Last activity: [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-theme-updater-error-on-activation/)
 * Status: not resolved