When running the up to date master version of CirrusSearch with MW 1.20.0 and I then try to run this "php forceSearchIndex.php --forceUpdate" the following error appears:
PHP Fatal error: Call to undefined method PNGHandler::getEntireText() in /var/www/wiki/extensions/CirrusSearch/includes/Updater.php on line 349
Version: REL1_22-branch
Severity: major
OS: Linux