The only related content I found on your site is outdated (almost 5 years) -
I took the simple steps of creating a custom map with POI then exported out a .KML through Google Maps. After Setting up a new world in the DevZone wizard, I'm able to search and open my worlds but I get a screen thats says "Attention, No places available"
What am I missing here? Clearly it's not seeing the POI's I added into the map.