Building dependency tree...
Reading state information...
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up samba4 (4.0.0~alpha17~git20110807.dfsg1-1ubuntu1) ...
Administrator password will be set randomly!
Unknown parameter encountered: "max log size"
Ignoring unknown parameter "max log size"
Unknown parameter encountered: "syslog"
Ignoring unknown parameter "syslog"
Unknown parameter encountered: "passdb backend"
Ignoring unknown parameter "passdb backend"
Unknown parameter encountered: "unix password sync"
Ignoring unknown parameter "unix password sync"
Unknown parameter encountered: "passwd program"
Ignoring unknown parameter "passwd program"
Unknown parameter encountered: "pam password change"
Ignoring unknown parameter "pam password change"
Unknown parameter encountered: "map to guest"
Ignoring unknown parameter "map to guest"
Traceback (most recent call last):
  File "/usr/share/samba/setup/provision", line 181, in <module>
    lp = sambaopts.get_loadparm()
  File "/usr/lib/pymodules/python2.7/samba/getopt.py", line 82, in get_loadparm
    self._lp.load_default()
RuntimeError: Unable to load default file
dpkg: error processing samba4 (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:

cd /var/lib/dpkg
sudo mv info info.bak
sudo mkdir info