[xwiki-users] can't program on virtual wiki

Hello! :) I'm trying some velocity code on a farm, but it just works for superadmin user, even though my user is registred on the main wiki, and have all possible rights. And i'm also trying to import Space explorer application, it didn't work on the farm; i've imported it on the main wiki... This application works in all wikis, but not farms. Can anyone help me? :(