Paolo, it seems I am getting the same error (below) and my events stopped working. I was having an error with drop down menus on my theme yesterday, it was resolved by disabling all plugins and activating them one by one until I found the one with the problem. After re-activating all plugins the events are now not working and I get this warning. My only event does show up in the map, but when I click on it it’s a 404. Please help.
Warning: Missing argument 2 for geodir_event_title_recurring_event() in /home/content/p3pnexwpnas08_data01/78/2620478/html/wp-content/plugins/geodir_event_manager/gdevents_hooks_actions.php on line 204
Here’s the permalink to the event with the 404
http://goroatan.com/events/tournaments/roatan-fishing-tournament-2015/
Thanks.