I installed a .war version of the latest version of Enterprise xwiki. Also configured this to use MySQL.
Imported the .xar file. System seems to come up ok until I try to add a user. I authenticate as user Admin,
when I try to add a user, when I click on 'Add User", an empty "lit up" window with rounded corners pops up at top of screen. The onlyl option available is to "cancel" or "close".