I can't see "Navigable Map" and/or "Choropleth Map" chart types views

I have correctly installed CKAN 2.5 version with some plugins and it is running in a production server. Now I wanted to add ckanext-mapviews' extension to configure regular choropleth maps to CKAN.

I have followed the instructions as it is said installing the setup.py and adding choroplethmap to the list in ckan.plugins attribute but I don't see the new Choropleth Map chart type option in the view type's list. I have also checked logs but there is no clue to know what it could be happening.

What can I do to make it works?

Start by reviewing the setup.py installation and the ckan.plugins configuration for the choroplethmap entry, then inspect how the view type list is assembled. Check the server logs while loading the resource view. Done means the Navigable Map and/or Choropleth Map chart type appears in the available view types.

Written by the indexing model from the issue text.