Noticed this in xwiki.cfg, diff between 8.4.4 and 9.0: 102c105 < # xwiki.store.migration.manager.hint=hibernate --- > # xwiki.store.migration.manager.hint=hibernatehibernate
I am going to assume hibertnatehibernate is not the correct value there. :) Let me know if you want a bug filed. Thanks, Craig