The errors look like this:
$ php scripts/ttmserver-export.php 27026 0.25 6.2M Forked thread 27028 to handle bootstrapping 27028 0.25 6.2M Cleaning up old entries... PHP Fatal error: Call to undefined method DatabaseTTMServer::setLogger() in /var/lib/mediawiki/extensions/Translate/scripts/ttmserver-export.php on line 136 27026 0.34 7.2M Forked thread 27029 to handle wiki-sidebar PHP Fatal error: Call to undefined method DatabaseTTMServer::setLogger() in /var/lib/mediawiki/extensions/Translate/scripts/ttmserver-export.php on line 152 27026 0.42 7.2M Forked thread 27030 to handle wiki-mainpage PHP Fatal error: Call to undefined method DatabaseTTMServer::setLogger() in /var/lib/mediawiki/extensions/Translate/scripts/ttmserver-export.php on line 152 ... PHP Fatal error: Call to undefined method DatabaseTTMServer::setLogger() in /var/lib/mediawiki/extensions/Translate/scripts/ttmserver-export.php on line 152 27026 0.62 7.2M Optimizing... PHP Fatal error: Call to undefined method DatabaseTTMServer::setLogger() in /var/lib/mediawiki/extensions/Translate/scripts/ttmserver-export.php on line 146****