package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 126

[azteech]

During install of Samba4 package, from root terminal (aptitude -y install samba4) received several errors and installation failed. Packages successfully downloaded, and unpackaged. During set set "Setting up samba4 (4.0.0~alpha18.dfsg1-4ubuntu2)", started receiving unknown parameter errors beginning with
                          Unknown parameter encountered: "max log size"
                          Ignoring unknown parameter "max log size"

followed by several more similiar unknown parameter errors. Intermixed was error "ERROR: Invalid smb.conf" which was followed by several more invalid parameter errors.

Then received

ERROR: Invalid smb.conf
/var/lib/dpkg/info/samba4.postinst: 14: /var/lib/dpkg/info/samba4.postinst: /usr/share/samba/setoption.pl: Permission denied
dpkg: error processing samba4 (--configure):
 subprocess installed post-installation script returned error exit status 126
No apport report written because MaxReports is reached already
                                                              Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Errors were encountered while processing:
 samba4
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:

The automatic recovery steps failed, with exactly the same sequence.

Purged and autoremoved samba4 packages - attempted samba4 install a second time with exactly the same errors happening.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: samba4 4.0.0~alpha18.dfsg1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-30.48-generic 3.2.27
Uname: Linux 3.2.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu13
AptOrdering:
 system-config-samba: Remove
 python-libuser: Remove
 libuser1: Remove
 samba: Remove
 samba4: Configure
Architecture: amd64
Date: Thu Sep 6 12:17:36 2012
ErrorMessage: subprocess installed post-installation script returned error exit status 126
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: samba4
Title: package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 126
UpgradeStatus: Upgraded to precise on 2012-08-31 (6 days ago)

[azteech (stevep.)]

Additional info - the report above incorrectly identifies I am on 10.04.1 LS - "InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)" - this is incorrect. I am on 12.04.1 amd64. for what ever reason the report tool is picking up the incorrect version (though I did upgrade from 10.04.1 LTS shortly after 12.04.1 was released).

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.