When clicking on Lists and Users or Campaign tabs on the config section, I get "HTTP Error 500 (Internal Server Error)"

Comments

Priority:Major» Critical

In the config section, clicking on the Lists and Users or Campaign tabs results in "HTTP Error 500 (Internal Server Error)".

Status:Active» Closed (duplicate)

Check the issue queu, release notes, and documentation. And if you really want help, provide more details than 500 error, which is generic.

I am getting the same thing.

Status:Closed (duplicate)» Active

this is the actual error:

The website encountered an error while retrieving http://xxxxx.co.uk/?q=admin%2Fconfig%2Fservices%2Fmailchimp%2Flists%2Fadd&. It may be down for maintenance or configured incorrectly.

This is what the log file says
[31-Jan-2013 20:16:40 America/New_York] PHP Fatal error: Call to undefined function libraries_load() in /####/#####/public_html/#####/sites/all/modules/mailchimp/mailchimp.module on line 200
[31-Jan-2013 20:20:40 America/New_York] PHP Fatal error: Call to undefined function libraries_detect() in /####/####/public_html/#####/sites/all/modules/mailchimp/mailchimp.install on line 43

I just dealt with this too - make sure you read this carefully - http://drupalcode.org/project/mailchimp.git/blob/HEAD:/README.txt

Especially the bit about # Installation Notes

Version:7.x-2.9» 7.x-2.10
Component:General» Lists

Same error, coming from a long way...

Documentation and issues reviewed:

http://drupal.org/project/mailchimp
http://drupal.org/documentation/modules/mailchimp
/sites/all/modules/mailchimp/README.txt
http://drupal.org/node/1883984
http://drupal.org/node/1894956
http://drupal.org/node/1314268

Currently installed modules and libraries:

Drupal 7.19
Libraries API 7.x-2.0
MailChimp 7.x-2.10

Done and remaining issues:
MCAPI.class.php (MailChimp PHP API Wrapper 1.3) Finally, The MailChimp MCAPI wrapper library is installed correctly.
Deleted /sites/all/modules/mailchimp/includes/mailchimp.inc file and replacing line 201 in mailchimp.module as suggested in #14 in 1314268, still got this 500 error...
API key input in Drupal, but "You have no applications authorized just yet." in Mailchimp Authorized Applications.

Followed #54 of http://drupal.org/node/1883984 step by step exactly again, finally got the "add a list" working...Sam