package mount 2.17.2-3.3ubuntu4 failed to install/upgrade: subprocess new pre-installation script returned error exit status 127

[Jeroen Roovers]

Binary package hint: util-linux

Description: Ubuntu natty (development branch)
Release: 11.04

dpkg:
  Installed: 1.15.8.10ubuntu1
  Candidate: 1.15.8.10ubuntu1
  Version table:
 *** 1.15.8.10ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
        100 /var/lib/dpkg/status
mount:
  Installed: 2.17.2-3.3ubuntu4
  Candidate: 2.17.2-9.1ubuntu1
  Version table:
     2.17.2-9.1ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ natty/main i386 Packages
 *** 2.17.2-3.3ubuntu4 0
        100 /var/lib/dpkg/status

updating using aptitude upgrade:

jeroen@patricia:~ $ sudo aptitude upgrade
The following packages will be upgraded:
  bsdutils computer-janitor computer-janitor-gtk empathy empathy-common libblkid1 libegl1-mesa libegl1-mesa-drivers libgl1-mesa-dri
  libgl1-mesa-glx libglu1-mesa libuuid1 mount nautilus-sendto-empathy passwd util-linux uuid-runtime
The following packages are RECOMMENDED but will NOT be installed:
  telepathy-butterfly
17 packages upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/7,383 kB of archives. After unpacking 20.5 kB will be used.
Do you want to continue? [Y/n/?]
Preconfiguring packages ...
(Reading database ... 169729 files and directories currently installed.)
Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_i386.deb) ...
/var/lib/dpkg/tmp.ci/preinst: 49: dpkg-vendor: not found
dpkg: error processing /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb (--unpack):
 subprocess new pre-installation script returned error exit status 127
Errors were encountered while processing:
 /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
[blink]

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: mount 2.17.2-3.3ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-3.30-generic 2.6.38-rc4
Uname: Linux 2.6.38-3-generic i686
Architecture: i386
Date: Wed Feb 16 04:33:10 2011
DpkgTerminalLog:
 Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_i386.deb) ...
 /var/lib/dpkg/tmp.ci/preinst: 49: dpkg-vendor: not found
 dpkg: error processing /var/cache/apt/archives/mount_2.17.2-9.1ubuntu1_i386.deb (--unpack):
  subprocess new pre-installation script returned error exit status 127
ErrorMessage: subprocess new pre-installation script returned error exit status 127
SourcePackage: util-linux
Title: package mount 2.17.2-3.3ubuntu4 failed to install/upgrade: subprocess new pre-installation script returned error exit status 127