package samba4 4.0.0~alpha17~git20110807.dfsg1-1ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[PatM]

won't install

ProblemType: Package
DistroRelease: Ubuntu 11.10
Package: samba4 4.0.0~alpha17~git20110807.dfsg1-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-12.51-generic-pae 2.6.38.8
Uname: Linux 2.6.38-12-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: i386
Date: Fri Nov 11 18:57:06 2011
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Lubuntu 10.10 "Maverick Meerkat" - i386 (20101010)
SourcePackage: samba4
Title: package samba4 4.0.0~alpha17~git20110807.dfsg1-1ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to oneiric on 2011-11-11 (0 days ago)