I can't download my logs?

I have an APM 2.5 running ArduCopter 3.1 when I try to download my logs via MavLink I get a error saying that the read timed out. If I try to download my logs via USB I get pure gibberish. What am I doing wrong?

@Tony G,
Are you following these Wiki instructions http://copter.ardupilot.com/wiki/common-downloading-and-analyzing-data-logs-in-mission-planner/ ?
Regards,
TCIII GM