Thread:Extension talk:SubPageList/Fatal error: Call to undefined method DatabaseMysql::buildLike()

After installing SubPageList, and adding the default plain-jane tag to a page that has subpages, I get this error:
 * Fatal error: Call to undefined method DatabaseMysql::buildLike in /var/www/extensions/SubPageList/SubPageList.class.php on line 209

Did I miss something in the configuration?