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

[Anthony Hook]

Binary package hint: util-linux

This package failed to install this morning.

The following packages will be upgraded:
  bsdutils libblkid1 libegl1-mesa libegl1-mesa-drivers libgl1-mesa-dri
  libgl1-mesa-glx libglu1-mesa libuuid1 mount util-linux uuid-runtime
11 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/4,841 kB of archives.
After this operation, 12.3 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
Preconfiguring packages ...
(Reading database ... 205808 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
No apport report written because MaxReports is reached already
                                                              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)

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 05:28:35 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
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
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