Last time I have noticed problem with google maps cluster.
I use gmaps4rails plugin (i tried version 0.8.6 and 1.1.5, and problem exist in both).
Simple map with one marker is displayed properly.
But if i got 10 markers then map isnt showed(many markers create one cluster).
I inspect that problem with firebug and it return
e.b.mapTypes[e.b.getMapTypeId()] is undefined
This error is from file -> https://google-maps-utility-library-v3.googlecode.com/svn/tags/markerclusterer/1.0/src/markerclusterer_compiled.js
Moreover I tried to disable clustering with options
<%= gmaps({"markers" => { "data" => @json }, "map_options" => {"do_clustering" => false}}, true, true) %>
But I got the same error.
Is there a quick solution to that problem??
This was due to an update from google causing incompatibility.
It's ok now.