Title: 500 Error
Last modified: August 30, 2016

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# 500 Error

 *  Resolved [cduong](https://wordpress.org/support/users/cduong/)
 * (@cduong)
 * [10 years, 7 months ago](https://wordpress.org/support/topic/500-error-59/)
 * When I install and MailChimp 2.3.16 to my wordpress at Paleoista.com, I’m no 
   longer able to log into my wordpress and get an internal server error when I’m
   already in the admin.
 * [https://wordpress.org/plugins/mailchimp-for-wp/](https://wordpress.org/plugins/mailchimp-for-wp/)

Viewing 4 replies - 1 through 4 (of 4 total)

 *  Plugin Author [Danny van Kooten](https://wordpress.org/support/users/dvankooten/)
 * (@dvankooten)
 * [10 years, 7 months ago](https://wordpress.org/support/topic/500-error-59/#post-6664600)
 * Hi Cduong,
 * That is strange and obviously not what should be happening. Can you be a bit 
   more specific on what error you’re seeing? Do you have access to your error logs?
   It would be of great help if we could know what the exact error message is.
 *  Thread Starter [cduong](https://wordpress.org/support/users/cduong/)
 * (@cduong)
 * [10 years, 7 months ago](https://wordpress.org/support/topic/500-error-59/#post-6664668)
 * Good Morning Danny,
 * Sorry for the really brief first message. I was so busy and didn’t realize I 
   was being so unhelpful.
 * Error from our host:
    [14-Oct-2015 01:16:17 UTC] PHP Fatal error: Class ‘MC4WP_Usage_Tracking_Nag’
   not found in /www/sites/www.paleoista.com/files/html/wp-content/plugins/mailchimp-
   for-wp/includes/admin/class-admin.php on line 36
 * When I try to access the login, I get “the website encountered an error while
   retrieving [http://www.paleoista.com/wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=/](http://www.paleoista.com/wp-admin/plugins.php?activate=true&plugin_status=all&paged=1&s=/)
   it may be down for maintenance or configured incorrectly.
 * However, access to the site itself is all normal.
 * Thank you,
    Cindy
 *  Plugin Contributor [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * (@hchouhan)
 * [10 years, 7 months ago](https://wordpress.org/support/topic/500-error-59/#post-6664681)
 * Hello Cindy,
 * May I request you to manually delete the plugin folder and to try installing 
   it again. If even that does not solve, I would request you to email us at “support
   @ mc4wp.com”.
 *  Plugin Contributor [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * (@hchouhan)
 * [10 years, 6 months ago](https://wordpress.org/support/topic/500-error-59/#post-6664758)
 * Hello,
 * I’m marking this ticket as resolved as we have not received any reply. If your
   issue is still unresolved, please share with us more details so we can assist
   you further.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘500 Error’ is closed to new replies.

 * ![](https://ps.w.org/mailchimp-for-wp/assets/icon-256x256.png?rev=1224577)
 * [MC4WP: Mailchimp for WordPress](https://wordpress.org/plugins/mailchimp-for-wp/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/mailchimp-for-wp/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/mailchimp-for-wp/)
 * [Active Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/mailchimp-for-wp/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/mailchimp-for-wp/reviews/)

## Tags

 * [500 error](https://wordpress.org/support/topic-tag/500-error/)
 * [Failed](https://wordpress.org/support/topic-tag/failed/)
 * [installation](https://wordpress.org/support/topic-tag/installation/)

 * 4 replies
 * 3 participants
 * Last reply from: [Harish Chouhan](https://wordpress.org/support/users/hchouhan/)
 * Last activity: [10 years, 6 months ago](https://wordpress.org/support/topic/500-error-59/#post-6664758)
 * Status: resolved