Automatic creation of XWIKI schema?

I can't get XWiki to start because my database has no tables in it. It complains that the XWIKI schema doesn't exist. I understand some people fall back to using a *.sql script to create their schema and tables, but that XWiki -- through Hibernate -- should be able to automatically create the tables it needs. I've looked in my xwiki.cfg and found that the following is set to non-zero: xwiki.store.hibernate.updateschema=1 Is that all there should be to it? I know Hibernate also supports properties to automatically create the schema, but I can't figure out how I would set that for Hibernate within XWiki: hibernate.hbm2ddl.auto=create-drop I'm running under Tomcat 5.5 on Windows XP with Apache Derby in Embedded mode. I can connect to my DB using SQuirreL SQL and confirm that even the XWIKI schema isn't being created. I can manually create it ('create schema XWIKI;') and then the XWiki errors turn into tables not existing rather than schema not existing. I've tried to turn on debugging for com.xpn.xwiki.store in my manually created xwiki/WEb-INF/classes/logging.properties (as per the TomCat documentation), but I can't see any output getting logged (logging in TomCat was already a challenge for me, so that's just making this XWiki problem harder to solve). Any ideas? Regards, Brian.