I have installed CMC and linked it to Mailchimp
I have the API key in place and the Webhook
I have the CMC Newsletter Module installed and working fine.
The CB plugin is activated and the correct list is selected.
The CMC Reg Plugin is activated and the correct list is selected.
(Wasn't sure if I need both of these, but when I deactivated the CMC Reg Plugin I got the error :
Fatal error: Class 'CmcHelperRegistration' not found in /home/####/public_html/components/com_comprofiler/plugin/user/plug_cmc-newsletterregistration/cmc.php on line 271)
I have imported existing users into Mailchimp and I have synced the list
When I add a new user in Community Builder they are not coming up in Mailchimp

Fatal error: Class 'CmcHelperRegistration' not found in /home/cfcpres/public_html/components/com_comprofiler/plugin/user/plug_cmc-newsletterregistration/cmc.php on line 271