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

[Searcher]

tried to upgrade and crash

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: samba4 4.0.0~alpha18.dfsg1-4ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic 3.2.28
Uname: Linux 3.2.0-31-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu13
AptOrdering:
 cpp-4.4: Install
 cpp-4.4: Configure
 gcc-4.4: Configure
 samba4: Configure
Architecture: i386
Date: Sun Nov 4 02:23:12 2012
DpkgHistoryLog:
 Start-Date: 2012-11-04 02:22:36
 Commandline: apt-get install -f
 Upgrade: cpp-4.4:i386 (4.4.6-11ubuntu2, 4.4.7-1ubuntu2)
ErrorMessage: subprocess installed post-installation script returned error exit status 126
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
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 2012-09-23 (41 days ago)