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

[Fernando Escobar]

it happened when i was upgrading to ubuntu 12.04 from 11.10, 11.10 was a fresh install but up to date with packages

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: samba4 4.0.0~alpha18.dfsg1-4ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-20.34-generic 3.0.30
Uname: Linux 3.0.0-20-generic x86_64
NonfreeKernelModules: fglrx wl
ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
Date: Sat Jun 2 14:54:17 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 126
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: samba4
Title: package samba4 4.0.0~alpha18.dfsg1-4ubuntu2 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 126
UpgradeStatus: Upgraded to precise on 2012-06-02 (0 days ago)