I face a similar issue, but I would like to use openstreetmap.org instead of google maps.
I followed these instructions (but without success):
This file contains the HTML generated for a single location Google map. You can copy this file to yourthemefolder/plugins/events/templates and modify it in an upgrade-safe manner. This file contains the HTML generated for a single location Google map. You can copy this file to yourthemefolder/plugins/events/templates and modify it in an upgrade-safe manner.
Any help please?
Thanks.