[xwiki-users] upgrade from 3.5 to 4.1.1 "LDAP service is not available. Please verify your installation."

upgrading from 3.5 on tomcat6 with mysql and LDAP auth against AD OS is Ubuntu 10.0.4 only "customisation" was in hibernate.cfg.xml for database and xwiki.cfg for LDAP and lucene path backed up database downloaded and unzipped new war file stopped tomcat moved webapps/xwiki to a backup location put the new xwiki in webapps/xwiki edited hibernate.cfg.xml: xwiki.cfg and xwiki.properties to match previous removed the LDAP config apart from xwiki.authentication.authclass=com.xpn.xwiki.user.impl.LDAP.XWikiLDAPAuthServiceImpl xwiki.authentication.ldap=1 started up tomcat logged in as local admin imported new admin.xar imported all of it, (well I'd upgraded this install quite a few times and wanted a "clean sheet") changed admin user password changed rights to prevent unregistered users imported the new ldap.xar go to setup LDAP get error "LDAP service is not available. Please verify your installation." logout as local admin login as superadmin and get same errror documentation here http://extensions.xwiki.org/xwiki/bin/view/Extension/LDAP+Application links to here http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Authentication#HLDAPAut… which doesn't have anything specific google searches for the error don't have anything remotely useful all pages are in place and database looks good, but the lack of LDAP auth is a bit of a pain any suggestions, or should I go back to 3.5 and upgrade to 4.1.1 without the LDAP .xar ? Cheers Arne