Same error.

versionutils.deprecated.NEWTON,

AttributeError: type object 'deprecated' has no attribute 'NEWTON' +lib/keystone:init_keystone:1 exit_trap +./stack.sh:exit_trap:480 local r=1 ++./stack.sh:exit_trap:481 jobs -p +./stack.sh:exit_trap:481 jobs= +./stack.sh:exit_trap:484 [[ -n '' ]] +./stack.sh:exit_trap:490 kill_spinner +./stack.sh:kill_spinner:376 '[' '!' -z '' ']' +./stack.sh:exit_trap:492 [[ 1 -ne 0 ]] +./stack.sh:exit_trap:493 echo 'Error on exit' Error on exit +./stack.sh:exit_trap:494 generate-subunit 1468006084 643 fail +./stack.sh:exit_trap:495 [[ -z /opt/stack/logs ]] +./stack.sh:exit_trap:498 /home/stack/devstack/tools/worlddump.py -d /opt/stack/logs World dumping... see /opt/stack/logs/worlddump-2016-07-08-193847.txt for details ovs-vsctl: unix:/usr/local/var/run/openvswitch/db.sock: database connection failed (No such file or directory) ovs-vsctl: unix:/usr/local/var/run/openvswitch/db.sock: database connection failed (No such file or directory) +./stack.sh:exit_trap:504 exit 1

same error. Were you able to find a fix for this? I also use stable/newton.