package python-pexpect 2.3-1build1 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

[adibageek]

Description: Ubuntu 10.04 LTS
Release: 10.04
python-pexpect:
  Installé : 2.3-1build1
  Candidat : 2.3-1build1
 Table de version :
 *** 2.3-1build1 0
        500 http://ma.archive.ubuntu.com/ubuntu/ lucid/main Packages
        500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status
i have been making an update from 9.10 to 10.04 but the update is not successfully completed due to this bug

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: python-pexpect 2.3-1build1
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
Uname: Linux 2.6.31-20-generic i686
Architecture: i386
Date: Sat May 8 09:49:46 2010
ErrorMessage: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
PackageArchitecture: all
SourcePackage: pexpect
Title: package python-pexpect 2.3-1build1 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

[adibageek (abdelilahadiba)]

i can't use synaptic (remove pkg or add pkg) due to this bug