I have a setup that was running fine in the past.  I can get it to run on the older version of minera but eventually it stops responding but still mining.  Then eventually it quits mining.  I was excited for 0.9.0.   However when I connect all my gridseed blades and try to restart the miner to get them going it just sits there updating.  I have them on usb hubs that you can turn off/on in banks of three.  I can get minera to start on 15 of the 18 blades (9 miners with 2 blades each.).  I thought maybe it was one of the blades causing issues.  But I tried isolating them by sets of threes and they seem to all work.  Any help would be appreciated.  Edit to add this is on a RPi 2.  I ordered a RPi 3 to see if that helps.