Thread:Extension talk:OpenID/addExtensionField

I had a minor problem upgrading from 1.16 to 1.18. I downloaded the OpenID from svn and everything worked except the preferences page. I later discovered that maintenance/update.php was failing with the error

PHP Fatal error: Call to undefined method MysqlUpdater::addExtensionField in /var/www/mediawiki-1.18.2/extensions/OpenID/OpenID.hooks.php on line 369

It turns out that addExtensionField is in the MW trunk for 1.19, but not in the 1.18 release branch. To make the updater work, I had to manually revert this patch:

http://www.mediawiki.org/wiki/Special:Code/MediaWiki/99652

After that, the updater completed and the preferences page now works. I hope this helps someone.