It's in the email that was sent this morning (and quoted in this thread) - K16 works for half the chips (it will hash with 8 chips at full speed). Hashing on all 16 doesn't appear to be working at this time.
Seems to me the real problem now is lack of incentive to get it working. Most of the people experienced with the design and so downhearted they've downed tools. I think the design is likely to be working in a week or so. I feel for those chips have been delivered for a few weeks now but they have no working design (not in this group buy).