extractor.php outputs this while creating pot files:

Starting.

Processing advpoll.module...
Invalid marker content in advpoll.module:739
* t(ucfirst($mode['name']).' poll')

Processing advpoll.install...
Processing advpoll.info...
Processing modes/binary.inc...
Processing modes/ranking.inc...
Invalid marker content in modes/ranking.inc:49
* t(strval($i).'th')

Done.