package ltsp-client-core (not installed) failed to install/upgrade: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1

[Grendened]

I tried to install ltsp on my Natty machine, but I got this error.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: ltsp-client-core (not installed)
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
AptOrdering:
 ltsp-client-core: Install
 ltsp-client-core: Configure
 ltsp-client: Configure
Architecture: amd64
Date: Thu Jul 7 15:05:51 2011
ErrorMessage: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: ltsp
Title: package ltsp-client-core (not installed) failed to install/upgrade: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Stéphane Graber (stgraber)]

Description: LTSP client environment (core)
 The scripts needed to configure and boot an LTSP client.
 .
 DO NOT install this package on a regular machine, it is intended only
 for installation inside a LTSP client filesystem.

This package will always fail to install outside an ltsp chroot.