I get this trying to start smartd manually (service smartd start).
The only thing I can think of is that I have recently installed a IBM M1015, but I have not flashed it yet. The disks are in JBOD at the moment. Would that affect things?
I accidentally clicked it off in the web ui, and when I went to restart it wouldn't start up. So I went to the cli and tried:
service smartd start
/usr/local/etc/rc.d/smartd start
This is a fresh install, so I am not sure if turning it off screwed it up or if it was maybe never running to begin with, but the UI for some reason marked it as "on".