I'm sorry my reply is so late, I've been a bit busy in the last days.

Hey XFox - so is the API Output window updating OK?
Yes, the API Output window is updating correctly.
Can you just triple check your settings are correct in MobileMiner preferences if so please? Enter them again even if they're right
I've already did it before posting with no success.
On a side note, on iOS I haven't found a way to check or enter the e-mail address and API key again after they have been set for the first time. I had to delete and reinstall the MobileMiner app to do it. nwoolls, am I missing something?
Do you have a machine running a newer OS you could give it a shot with?
Yes, I will test it on Mountain Lion and report back.
UPDATE:
I had no success on Mountain Lion (OS X 10.8.5), either.
One more thing Xfox, what's the Device name of the Knc, ASC0?
Yes, it's ASC0.