Title: Fatal memory error after installing plugin
Last modified: August 21, 2016

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# Fatal memory error after installing plugin

 *  Resolved [hankeester](https://wordpress.org/support/users/hankeester/)
 * (@hankeester)
 * [12 years ago](https://wordpress.org/support/topic/fatal-memory-error-after-installing-plugin/)
 * I’m not seeing any other posts regarding this but after activating plugin, I’m
   getting a fatal memory error which crashes the backend of WP. Any answers on 
   why? I’m assuming the plugin is compatible with the lastest version of WP.
 * Thanks
 * [https://wordpress.org/plugins/appointment-booking-calendar/](https://wordpress.org/plugins/appointment-booking-calendar/)

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [12 years ago](https://wordpress.org/support/topic/fatal-memory-error-after-installing-plugin/#post-4906664)
 * This is usually a site issue – not a plugin one. Try [increasing the memory available to PHP](http://wordpress.org/support/topic/253495#post-1017842).
 *  Plugin Author [codepeople](https://wordpress.org/support/users/codepeople/)
 * (@codepeople)
 * [12 years ago](https://wordpress.org/support/topic/fatal-memory-error-after-installing-plugin/#post-4906680)
 * Hi,
 * Yes, the plugin is fully compatible with the latest versions of WordPress.
 * Try increasing the memory available to PHP as recommended in the previous reply.
 * Thank you for your interest in the plugin!
 *  Thread Starter [hankeester](https://wordpress.org/support/users/hankeester/)
 * (@hankeester)
 * [12 years ago](https://wordpress.org/support/topic/fatal-memory-error-after-installing-plugin/#post-4906681)
 * Will do. I was thinking that was the possible issue.
 * Thanks!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Fatal memory error after installing plugin’ is closed to new replies.

 * ![](https://ps.w.org/appointment-booking-calendar/assets/icon-256x256.png?rev
   =978691)
 * [Appointment Booking Calendar](https://wordpress.org/plugins/appointment-booking-calendar/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/appointment-booking-calendar/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/appointment-booking-calendar/)
 * [Active Topics](https://wordpress.org/support/plugin/appointment-booking-calendar/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/appointment-booking-calendar/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/appointment-booking-calendar/reviews/)

 * 3 replies
 * 3 participants
 * Last reply from: [hankeester](https://wordpress.org/support/users/hankeester/)
 * Last activity: [12 years ago](https://wordpress.org/support/topic/fatal-memory-error-after-installing-plugin/#post-4906681)
 * Status: resolved