package libreoffice-core 1:3.4.4-0ubuntu2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1

[chris lea]

reparing to replace libreoffice-core 1:3.4.4-0ubuntu2 (using .../libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_amd64.deb) ...
rmdir: failed to remove `usr/lib/libreoffice/basis3.4/program/': Directory not empty
dpkg: error processing /var/cache/apt/archives/libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: libreoffice-core 1:3.4.4-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-8.14-generic 3.2.0
Uname: Linux 3.2.0-8-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
Date: Thu Jan 12 11:11:47 2012
DuplicateSignature:
 Unpacking replacement libreoffice-math ...
 Preparing to replace libreoffice-core 1:3.4.4-0ubuntu2 (using .../libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_amd64.deb) ...
 rmdir: failed to remove `usr/lib/libreoffice/basis3.4/program/': Directory not empty
 dpkg: error processing /var/cache/apt/archives/libreoffice-core_1%3a3.5.0~beta2-2ubuntu2_amd64.deb (--unpack):
  subprocess new pre-installation script returned error exit status 1
ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111226)
SourcePackage: libreoffice
Title: package libreoffice-core 1:3.4.4-0ubuntu2 failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)