[lxc-users] error Error calling 'lxd forkstart documentation /var/lib/lxd/containers

[marcelo fortino]

This morning I did an apt-get update and lxd packages were upgraded.
since then I can't start any of the container, I had this error:

Error calling 'lxd forkstart documentation /var/lib/lxd/containers.

The lxd.log show this:
t=2015-08-12T14:10:59-0300 lvl=info msg="LXD is starting."
t=2015-08-12T14:10:59-0300 lvl=info msg="Default uid/gid map:"
t=2015-08-12T14:10:59-0300 lvl=info msg=" - u 0 100000 65536"
t=2015-08-12T14:10:59-0300 lvl=info msg=" - g 0 100000 65536"
t=2015-08-12T14:11:00-0300 lvl=info msg=Init driver=storage/dir
t=2015-08-12T14:11:02-0300 lvl=info msg="looking for existing
certificates:" cert=/var/lib/lxd/server.crt
key=/var/lib/lxd/server.key
t=2015-08-12T14:11:03-0300 lvl=info msg=Init driver=storage/dir
t=2015-08-12T14:11:03-0300 lvl=info msg="LXD isn't socket activated."
t=2015-08-12T14:11:03-0300 lvl=info msg=" - binding socket"
socket=/var/lib/lxd/unix.socket
t=2015-08-12T18:15:27-0300 lvl=info msg="Received 'power failure
signal', shutting down containers."


Lxd version 0.15 on Ubuntu 14.04. Any help to fix this?

many thanks.
Marcelo