[xwiki-users] Unable to activate xwiki/2.0 syntax after upgrade

Hi, We've just upgraded our wiki from 1.4.0 to 1.8.4 and are unable to activate any of the syntaxes - the syntax selector is not available in edit mode. Steps we've taken: - imported the default xar file - updated the plugins list - updated the configuration files - http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Configuration#HConfiguri... We have no customisation to the panels/skins etc. Where should I look to find out how to activate the new syntaxes? Thanks, Robert