package apport 1.20.1-0ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Binary package hint: apport

Ubuntu 11.04 beta, upgrading packages, apport failed

reedy@reedy-laptop:~$ lsb_release -rd
Description: Ubuntu Natty (development branch)
Release: 11.04

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: apport 1.20.1-0ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CrashReports: 600:0:0:118066:2011-04-20 20:07:27.385397000 +0100:2011-04-20 20:08:10.454868557 +0100:/var/crash/apport.0.crash
Date: Wed Apr 20 20:07:28 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
PackageArchitecture: all
SourcePackage: apport
Title: package apport 1.20.1-0ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to natty on 2011-04-19 (1 days ago)