When you are in main gruop pages ( the page where all groups are listed) and you click in the button "create a group" (in our case "crear un clan" ) joomla gaves you this error :

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') AND a.`state`='1'' at line 1 SQL=SELECT * FROM `v3_social_clusters_categories` AS a WHERE a.`id` IN() AND a.`state`='1'

Nevertheless in group category pages when you clcik in create a group all work fine.

Thanks for the help as always.