[xwiki-users] users/groups administration interface in virtual mode

Hello, I'm trying to configure virtual wikis following the documentation provided at http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Virtualization. I managed to configure manually some virtual wikis but then I'm no more able to administrate users,groups and rights using the administration/preferences interface (works well in NO virtual mode). The page freezes on "loading" and no users/groups or rights are diplayed. I've got javascripts errors in the firefox's console and the following css and javascript resources are not available when I run xwiki in virtual mode: /prismewiki/bin/skin/resources/js/xwiki/usersandgroups/usersandgroups.css /prismewiki/bin/skin/resources/js/xwiki/table/livetable.css /prismewiki/bin/skin/resources/js/xwiki/lightbox/lightbox.css /prismewiki/bin/skin/resources/js/xwiki/xwiki.js /prismewiki/bin/skin/resources/js/xwiki/lightbox/lightbox.js /prismewiki/bin/skin/resources/js/xwiki/usersandgroups/usersandgroups.js /prismewiki/bin/skin/resources/js/xwiki/table/livetable.js I got 302 http status for those urls and I can't access those urls. Besides I expected those resource to be something like: /prismewiki/xwiki/myvirtualwiki/bin/skin/resources/js/xwiki/usersandgroups/usersandgroups.css but even with that "virtual" url I still cannot access the resource. Thank you in advance for your help. Regards, Laurent