First, thanks for this great extension !
I have a concern with CMC user registration.
The link between mailchimp account and CMC extension works normally. When I create or delete a user whatever from mailchimp or Joomla CMC users back end the synchronization works perfectly.
I published the CMC registration module. On the user registration form the newletter box and the interests information appear properly. When I create a user from front office it is created into the Joomla users table but I noticed a PHP error :
"AH01071: Got error 'PHP message: PHP Notice: Trying to get property of non-object in /var/www/vhosts/http://avosmarques.com/httpdocs/plugins/user/cmc/cmc.php on line 81\nPHP message: PHP Notice: Undefined index: cmc_groups in /var/www/vhosts/http://avosmarques.com/httpdocs/plugins/user/cmc/cmc.php on line 240\nPHP message: PHP Warning: array_merge(): Argument #2 is not an array in /var/www/vhosts/http://avosmarques.com/httpdocs/plugins/user/cmc/cmc.php on line 240\n', referer: http://avosmarques.com/administrator/index.php?option=com_users&view=user&layout=edit&id=866"

When i click the confirmation link into the confirmation email the user is activated into Joomla, created perfectly into the mailchimp list but doesn't appear in the CMC User List.

Could you help me ?

Paul-Emile