I also have the same problem where map view worked before the latest update. Disabling the mailchimp plugin did get the map back on the screen.
Mailchimp and events are both mandatory requirements for my site, so disabling mailchimp is not an option. Adding another plugin to resolve this means another potential conflict on a site that is fully tested with dozens of existing plugins.
There was no conflict when I tested the plugin before the upgrade to ensure that that it was fully functional with my existing plugins. I have not upgraded Mailchimp since July. When will the fix be coming for this?