Title: Plugin prevents activating other plugins
Last modified: June 27, 2018

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# Plugin prevents activating other plugins

 *  [rockpeach](https://wordpress.org/support/users/rockpeach/)
 * (@rockpeach)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/plugin-prevents-enabling-other-plugins/)
 * Hello,
 * When this plugin is activated then it’s not possible to activate other plugins
 *  When trying to activate another plugin it shows the message ‘Plugin activated’
   on top of the plugins page but the plugin is actually still disabled in my plugins
   list and doesn’t show either in the active_plugins db.
 * It’s still possible to disable other plugins though. When this plugin is disabled
   then all works fine again
 * Let me know if you have ever seen that and what to do?
 * Thanks
    -  This topic was modified 7 years, 11 months ago by [rockpeach](https://wordpress.org/support/users/rockpeach/).

Viewing 1 replies (of 1 total)

 *  Thread Starter [rockpeach](https://wordpress.org/support/users/rockpeach/)
 * (@rockpeach)
 * [7 years, 11 months ago](https://wordpress.org/support/topic/plugin-prevents-enabling-other-plugins/#post-10441089)
 * Here are the PHP error logs I’m getting:
 * [27-Jun-2018 15:22:39 UTC] PHP Fatal error: Uncaught Error: Cannot use object
   of type WP_Error as array in /public_html/wp-content/plugins/swift-performance-
   lite/performance.php:675
    Stack trace: #0 /public_html/wp-content/plugins/swift-
   performance-lite/performance.php(645): Swift_Performance_Lite::prebuild_cache_hit(
   false) #1 /public_html/wp-includes/class-wp-hook.php(286): Swift_Performance_Lite::
   prebuild_page_cache(Array) #2 /public_html/wp-includes/class-wp-hook.php(310):
   WP_Hook->apply_filters(”, Array) #3 /public_html/wp-includes/plugin.php(515):
   WP_Hook->do_action(Array) #4 /public_html/wp-cron.php(126): do_action_ref_array(‘
   swift_performan…’, Array) #5 {main} thrown in /public_html/wp-content/plugins/
   swift-performance-lite/performance.php on line 675

Viewing 1 replies (of 1 total)

The topic ‘Plugin prevents activating other plugins’ is closed to new replies.

 * ![](https://ps.w.org/swift-performance-lite/assets/icon-256x256.jpg?rev=2388229)
 * [Swift Performance Lite](https://wordpress.org/plugins/swift-performance-lite/)
 * [Support Threads](https://wordpress.org/support/plugin/swift-performance-lite/)
 * [Active Topics](https://wordpress.org/support/plugin/swift-performance-lite/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/swift-performance-lite/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/swift-performance-lite/reviews/)

 * 1 reply
 * 1 participant
 * Last reply from: [rockpeach](https://wordpress.org/support/users/rockpeach/)
 * Last activity: [7 years, 11 months ago](https://wordpress.org/support/topic/plugin-prevents-enabling-other-plugins/#post-10441089)
 * Status: not resolved