Google Map will not load

I’ve installed the plug-in “All-In-One Calendar” and everything seems to work correctly except the Google map does not load:

http://megadutch.com/nwbridge/event/state-championshio/?instance_id=2

I understand I have to load an API code, which I did but apparently not correctly.

Any help you could provide me would be greatly appreciated.

GO CUBS! John.