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

[KevinM]

Binary package hint: util-linux

Tried to perform an upgrade from 2.6.38-3-generic #30-Ubuntu SMP Thu Feb 10 00:33:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux using System-Administration-Update Manager originally produced this problem. Ran Terminal and performed a 'sudo apt-get install -f' and then 'sudo apt-get update' and 'sudo apt-get upgrade' resulted in this error report.

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 x86_64
Architecture: amd64
Date: Wed Feb 16 08:47:12 2011
DpkgTerminalLog:
 Preparing to replace mount 2.17.2-3.3ubuntu4 (using .../mount_2.17.2-9.1ubuntu1_amd64.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_amd64.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 11.04 "Natty Narwhal" - Alpha amd64 (20110210)
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