Title: [Plugin: Events Manager] Activating plugin causes 500 server error Last modified: August 20, 2016 --- # [Plugin: Events Manager] Activating plugin causes 500 server error * Resolved [David Goebel](https://wordpress.org/support/users/david-goebel/) * (@david-goebel) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/) * As soon as I activate the plugin at tango.prototypetest.org I get a 500 error across the site. I then have to delete the plugin via FTP in order to get the GUI interface again. Any suggestions on what may be causing this? * Here is the site in question… [http://tango.prototypetest.org/](http://tango.prototypetest.org/) * [http://wordpress.org/extend/plugins/events-manager/](http://wordpress.org/extend/plugins/events-manager/) Viewing 12 replies - 1 through 12 (of 12 total) * Plugin Author [Marcus (aka @msykes)](https://wordpress.org/support/users/netweblogic/) * (@netweblogic) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644257) * you’d need to turn on WP_DEBUG or check your error logs to see what the fatal error was. * Thread Starter [David Goebel](https://wordpress.org/support/users/david-goebel/) * (@david-goebel) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644286) * Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /hsphere/local/home/c280643/tango.prototypetest.org/wp-admin/ includes/media.php on line 622 * So how do I up the memory size? * Line 622 shows this… `$html = "$alt";` * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644296) * Try [increasing the memory available to PHP](http://wordpress.org/support/topic/253495#post-1017842). * Thread Starter [David Goebel](https://wordpress.org/support/users/david-goebel/) * (@david-goebel) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644305) * I added the following line to wp-config.php * `define('WP_MEMORY_LIMIT', '64M');` * And now it works just fine! Thanks a ton. 🙂 * So what is the default out of the box setting for WP anyway? * [esmi](https://wordpress.org/support/users/esmi/) * (@esmi) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644315) * There isn’t a WordPress default memory setting. It’s defined by your server/hosts but, generally, it’s advisable to have at least 64M – otherwise you will keep hitting problems. * [martin_basel](https://wordpress.org/support/users/martin_basel/) * (@martin_basel) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644363) * Hi David I have similiar problem, when I activate the plugin: Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 30720 bytes) in /home/ www/web80/html/wp-content/plugins/events-manager/classes/em-booking.php on line 346 * I added define(‘WP_MEMORY_LIMIT’, ’64M’); to config.php but nothing happend. Do I have to restart / refresh something?! Any other idea? Regards Martin * [alexmoomey](https://wordpress.org/support/users/alexmoomey/) * (@alexmoomey) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644370) * I am not getting the above error.. but my Admin Gui is down after installation. Debug reveals the following. Notice: Undefined index: page in /home/www/arkansasburners. org/wp-content/themes/DynamiX/lib/adm/index.php on line 1886 * Notice: Undefined index: page in /home/www/arkansasburners.org/wp-content/themes/ DynamiX/lib/adm/index.php on line 1886 * Notice: Undefined index: page in /home/www/arkansasburners.org/wp-content/themes/ DynamiX/lib/adm/index.php on line 1907 * Notice: Undefined index: page in /home/www/arkansasburners.org/wp-content/themes/ DynamiX/lib/adm/index.php on line 1940 * Notice: Undefined index: page in /home/www/arkansasburners.org/wp-content/themes/ DynamiX/lib/adm/index.php on line 2009 * Notice: wp_enqueue_style was called incorrectly. Scripts and styles should not be registered or enqueued until the wp_enqueue_scripts, admin_enqueue_scripts, or init hooks. Please see Debugging in WordPress for more information. (This message was added in version 3.3.) in /home/www/arkansasburners.org/wp-includes/ functions.php on line 3587 * Fatal error: Class ‘BP_Groups_Member’ not found in /home/www/arkansasburners. org/wp-content/plugins/events-manager/buddypress/bp-em-groups.php on line 85 * [alexmoomey](https://wordpress.org/support/users/alexmoomey/) * (@alexmoomey) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644371) * this is my line 85 that caused the fatal error above: * $group_ids = BP_Groups_Member::get_group_ids(get_current_user_id()); * [agelonwl](https://wordpress.org/support/users/angelonwl/) * (@angelonwl) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644376) * [@alexmoomey](https://wordpress.org/support/users/alexmoomey/) * at the moment, the workaround would be changing line 82 in `events-manager/buddypress/ bp-em-groups.php` * From `if( is_user_logged_in() ){` * to `if( is_user_logged_in() && class_exists("BP_Groups_Member") ){` * Also, please don’t double post * [alexmoomey](https://wordpress.org/support/users/alexmoomey/) * (@alexmoomey) * [14 years, 1 month ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644377) * sorry I didn’t mean to cross-post. I was just responding to other’s posts. You replied quickly.. wasn’t expected that or would’ve only replied to one post and not made my own. * May i also make a suggestion as well? Warn people ahead of time before installation to have Buddypress’s group option enable or else it will make their admin GUI broken. It’s kinda important dontcha’ think? * [openroadrides](https://wordpress.org/support/users/openroadrides/) * (@openroadrides) * [13 years, 8 months ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644555) * I just tried installing this plug in as well and I get the same 500 server error. Looking at the php error logs I get the following entries when I try to access the WP_Admin site after activating the plugin… * [29-Aug-2012 16:42:27] WordPress database error Unknown column ‘event_notes’ in ‘wp_em_events’ for query ALTER TABLE wp_em_events CHANGE event_notes post_content longtext NULL DEFAULT NULL made by require_once(‘wp-admin/admin.php’), require_once(‘ wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), call_user_func_array, em_init, em_install, em_create_events_table [ 29-Aug-2012 16:42:27] WordPress database error Unknown column ‘location_description’ in ‘wp_em_locations’ for query ALTER TABLE wp_em_locations CHANGE location_description post_content longtext NULL DEFAULT NULL made by require_once(‘wp-admin/admin. php’), require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘ wp-settings.php’), do_action(‘init’), call_user_func_array, em_init, em_install, em_create_locations_table * Any help would be nice. Looking at the plugin demo, etc. I think this is just what I am looking for, but if I can’t get it working I am SOL. * Plugin Author [Marcus (aka @msykes)](https://wordpress.org/support/users/netweblogic/) * (@netweblogic) * [13 years, 8 months ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644556) * [@openroadrides](https://wordpress.org/support/users/openroadrides/) this warning should be a one-off, I’m guessing the plugin would work fine from now onw. * If not, i’d recreate this topic as a new one as it’s not related. Viewing 12 replies - 1 through 12 (of 12 total) The topic ‘[Plugin: Events Manager] Activating plugin causes 500 server 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/) * 12 replies * 7 participants * Last reply from: [Marcus (aka @msykes)](https://wordpress.org/support/users/netweblogic/) * Last activity: [13 years, 8 months ago](https://wordpress.org/support/topic/plugin-events-manager-activating-plugin-causes-500-server-error/#post-2644556) * Status: resolved