Fatal error: Call to a member function getPrefixedText() on a non-object in /usr/local/apache/common-local/wmf-deployment/extensions/LiquidThreads/classes/Hooks.php on line 180
Seen when dumping page stubs; this therefore breaks all page text dumps as well.
Reedy pointed to this revision as the guilty party:
http://www.mediawiki.org/wiki/Special:Code/MediaWiki/68594
Version: unspecified
Severity: major
URL: http://dumps.wikimedia.org/ptwikibooks/20110111/