package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 126 - I get this on all installs and updates. Would like to know resolution if one exists.

[Charles Stensrud]

Ubuntu version is 12.04.2 LTS. This error occurs on nearly every package I install using Ubuntu Software center or Synaptic Package Manager, and using Updater. If I don't get the 126 error, I get a permission denied error. Not sure whether this is file permission or procedure permission failure. Most installed packages "seem" to work propery, although at this point I am too much of a novice to really know. I have searched far and wide for solutions to these errors, but haven't found any usefull suggestions yet.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: samba4 4.0.0~alpha18.dfsg1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-39.62-generic-pae 3.2.39
Uname: Linux 3.2.0-39-generic-pae i686
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: i386
Date: Tue Apr 2 17:52:31 2013
DpkgHistoryLog:
 Start-Date: 2013-04-02 17:52:22
 Commandline: /usr/sbin/synaptic
 Install: brother-lpr-drivers-laser1:i386 (1.0.0-3-0ubuntu5), brother-cups-wrapper-laser1:i386 (1.0.2-1-0ubuntu7, automatic), a2ps:i386 (4.14-1.1, automatic), psutils:i386 (1.17-31, automatic), brother-lpr-drivers-common:i386 (1.0.0-4-0ubuntu1, automatic), wdiff:i386 (0.6.5-1, automatic)
ErrorMessage: subprocess installed post-installation script returned error exit status 126
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120817.3)
MarkForUpload: True
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: No upgrade log present (probably fresh install)