package xemacs21 21.4.22-2ubuntu1 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 2 zur?ck

[schatz]

Binary package hint: xemacs21

1)
Description: Ubuntu 9.10
Release: 9.10

2)
apt-cache policy packagename
W: Kann Paket packagename nicht finden

cat /etc/apt/sources.list
deb http://security.ubuntu.com/ubuntu karmic-security main restricted
deb-src http://security.ubuntu.com/ubuntu karmic-security main restricted
deb http://security.ubuntu.com/ubuntu karmic-security universe
deb-src http://security.ubuntu.com/ubuntu karmic-security universe
deb http://security.ubuntu.com/ubuntu karmic-security multiverse
deb-src http://security.ubuntu.com/ubuntu karmic-security multiverse

3) A successfull installation of xemacs21 ;)

4) Verarbeite Trigger für libc-bin ...
ldconfig deferred processing now taking place
Fehler traten auf beim Bearbeiten von:
 xemacs21
E: Sub-process /usr/bin/dpkg returned an error code (1)

ProblemType: Package
Architecture: i386
Date: Tue Feb 9 12:45:59 2010
DistroRelease: Ubuntu 9.10
ErrorMessage: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 2 zurück
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: xemacs21 21.4.22-2ubuntu1
PackageArchitecture: all
ProcVersionSignature: Ubuntu 2.6.31-19.56-generic
SourcePackage: xemacs21
Title: package xemacs21 21.4.22-2ubuntu1 failed to install/upgrade: Unterprozess installiertes post-installation-Skript gab den Fehlerwert 2 zurück
Uname: Linux 2.6.31-19-generic i686

[era (era)]

Quoting the attached DpkgTerminalLog.gz:
> update-alternatives: error: Alternativen-Pfad /usr/bin/xemacs21 existiert nicht

This is a know -- albeit not yet properly analyzed -- problem; marking as a duplicate.

By the way, in step 2) you were supposed to put "apt-cache policy xemacs21" but in this case I don't think that's necessary.