Does MailChimp for WordPress conflict with MailChimp Sync?

We have MailChimp for WordPress V 4.1.0 by ibericode and MailChimp Sync V 1.9.3 by WPMU DEV active on our site (I can't remember why as they've been there for so long!). Recently we are getting lots of errors in the general error_log. I think they are generated from the WPMU DEV plugin not the MailChimp Sync plugin as that hasn't shown anything recent in its own debug log. Can I send or upload (without it being publicly viewable) the error log for you to look at?