I'm still having issues. I tried hitting the restart proxy button on the bitfury screen. it didn't make any difference. I'll let things run for a day incase it manages to fix itself. I need to shut it down tomorrow to add a couple of more cards so it will get a reboot then if all else fails.
For my BF rigs, I need to restart the proxy, then stop the miner, wait 30 secs, then restart the miner.
ssh in and look at the error rates coming each chip from the /run/shm/.stat.log file. If the errors are high from the beginning, they don't seem to settle down as the hashrate ramps up. In that case, start and stop the miner again until you get a clean startup.