[xwiki-users] XWiki update 7.1-rc1 to 7.2-milestone1

Hello everyone, I am new to XWiki and wanted to thank you for your great work. XWiki is a really robust system and I enjoy working with it. However, I try to update XWiki 7.1-rc1 to xwiki 7.2 and the distribution wizard moves into an endless loop ( http://jira.xwiki.org/browse/XWIKI-12315 ). I already upgraded the default wiki pages with xwiki-enterprise-ui-mainwiki-all-7.2-mil~.xar but now some of the translations are broken. In the administration panel it shows "wikis.rights" instead of the translatet word for "Rights". What could cause that error? Can someone explain how I could update the enterprise ui packages manually? Is there a workarround known already? Thank you, Louis