Forum OpenACS Development: Re: New package: MAPS (Google Maps integration)
Well, if you could supply more info about the error maybe I could help you more. My guess in this case is that you didn't sign out for a Google Maps API Key, as the map is not being shown. Take a look at the docs here:
Or just type /doc in your install and click under the maps package. You have to go to /maps/admin/ page and click on the edit parameters link. In this page you have to supply the key that Google gives you here: http://code.google.com/apis/maps/signup.html
If it doesn't work, try to give me more details about the error, such as log messages or something like this, so I can help you better.
I hope it helps.