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MailChimp Plugin Installation Error

Posted: July 28, 2014 at 2:24 pm

Jen Smith

July 28, 2014 at 2:24 pm

Hi! I just purchased an individual license with the MailChimp upgrade. Everything I’ve installed must be current because I just downloaded everything upon purchase. However, I’m getting this message when I activate the plugin and it will not activate. How do I solve this? Thanks!

Warning: require_once(EVENT_ESPRESSO_PLUGINFULLPATHincludes/functions/database_install.php) [function.require-once]: failed to open stream: No such file or directory in /home/recovery/public_html/wp-content/plugins/espresso-mailchimp/espresso-mailchimp.php on line 64

Lorenzo Orlando Caum

  • Support Staff

July 28, 2014 at 2:45 pm

Hi Jen,

Were your plugins installed through the WordPress dashboard?

Could you turn debugging off through your wp-config.php file:

define('WP_DEBUG', false);
  if (WP_DEBUG) {
    define('WP_DEBUG_LOG', true);
    define('WP_DEBUG_DISPLAY', true);


Jen Smith

July 28, 2014 at 2:48 pm

Hi! Yes, I installed via WP Dashboard. I deactivated and Uninstalled After I did that, the MailChimp plugin activated just fine. I found another post that said EE4 is not compatible with any of your add-ons yet – that’s what prompted me to delete that plugin.

When will EE4 be compatible? Seems odd to be forced to an earlier version to use the add-ons we’re paying for. Have I missed something? Thanks!

Lorenzo Orlando Caum

  • Support Staff

July 28, 2014 at 2:59 pm


The MailChimp addon is compatible with Event Espresso 3:

Please see this page:


The support post ‘MailChimp Plugin Installation Error’ is closed to new replies.

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Status: closed

Updated by  Lorenzo Orlando Caum 6 years, 2 months ago ago

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