There seems to be some kind of imcompatibility with WordPress in Spanish (I mean, a site installed with the WordPress Spanish instaler available at http://es.wordpress.org) and WP Document Revisions. I tested it on a site intalled in English, and it runs without problems. But on a site installed with the WordPress Spanish instaler the Menu item on the admin panel is not shown.
I would really love to use the plugin with my site’s team. Could the developer take a look a this?
Thanks in advance.
Issue was due to Advanced Access Manager plugin. I uninstalled it, installed the Members plugin, fixed some permissions related to Document Revisions and everything now works great again.