[xwiki-users] upgrading standalone xwiki?

hi folks, can anyone point me to a step-by-step example of upgrading a standalone xwiki? replacing the contents of ${XWIKI_HOME}/webapps/xwiki/ with xwiki-enterprise-web-2.1-rc-1.war & copying back the hibernate.cfg.xml and xwiki.cfg has resulted in: Problem accessing /xwiki/bin/view/Main/. Reason: Error number 3 in 0: Could not initialize main XWiki context Wrapped Exception: Error number 3001 in 3: Cannot load class com.xpn.xwiki.store.migration.hibernate.XWikiHibernateMigrationManager from param xwiki.store.migration.manager.class Wrapped Exception: Error number 0 in 3: Exception while hibernate execute Wrapped Exception: Could not parse mapping document from resource xwiki.hbm.xml i'm upgrading 2.0.3 to 2.1RC1 sorry if this is covered in a FAQ - the upgrade Xwiki Core from <http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Installation#HUpgradingXWikiCore> isn't very explicit any suggestions? regards p -- Peter Lees