Thanks Keri.
To save anyone else the time of searching through the thread, here's the actual answer from that thread below:
(from Rand, Sept 16, 2011) "Unfortunately, there's no one at Moz right now with the time to invest in understanding/fixing/repairing. We think we've got bigger/better plans for something much more useful along this trajectory once the Linkscape work is done, but that won't be for some time.
In the meantime, we maintain the tool "as is" in Labs. If you find it useful, great, but Labs is an area where we don't do maintenance of have guarantees on availability/accuracy."
