Fatal error: Call to undefined method DrupalMailchimp::ecommOrderDel()

Hi-
Thank you for this module.

I have upgraded to MailChimp 7.x-3.4 and have updated API in libraries to 2.0.6.

When I enable all MailChimp modules I have no problems, and when I subscribe from my subscribe block and then run cron, the subscribed email address promptly shows up on my list on the MailChimp website.

But as soon as I enable Commerce Mailchimp, I get the following error:

Fatal error: Call to undefined method DrupalMailchimp::ecommOrderDel() in /var/www/mysite/sites/all/modules/commerce_mailchimp/commerce_mailchimp.rules.inc on line 144

Hopefully I am making some stupid mistake.

Please advise.

Thanks in advance.

-Michael