If you're running in a multiwiki setup you'll also need to define the property ~xwiki.store.migration.databases=all~ to your ~xwiki.cfg~ file or explicitly name all databases to be migrated as in <tt>xwiki.store.migration.databases=db1,db2,...~.

Always make sure you compare your ~xwiki.cfg~ file with the newest version since some configuration parameters were added. Of note, you should add ~xwiki.store.migration=1~ so that XWiki will attempt to automatically migrate your current database to the new schema. Make sure you backup your Database before doing anything.