Libreoffice 3.4 failed to upgrade to 3.5 because the pre-inst script was unable to remove /usr/lib/libreoffice/basis3.4 folder

[Rigved Rakshit]

Description: Ubuntu precise (development branch)
Release: 12.04

libreoffice-base-core:
  Installed: 1:3.5.0~beta2-2ubuntu2
  Candidate: 1:3.5.0~beta2-2ubuntu2
  Version table:
 *** 1:3.5.0~beta2-2ubuntu2 0
        500 http://in.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
        100 /var/lib/dpkg/status

Expected Outcome: Libreoffice 3.4 should upgraded cleanly to Libreoffice 3.5 using apt-get dist-upgrade.

Actual Outcome: Libreoffice 3.4 failed to upgrade to Libreoffice 3.5 because the pre-inst script was unable to remove /usr/lib/libreoffice/basis3.4 folder.
This is because the basis3.4 folder was not empty. It had one folder called program and a hidden file. By manually removing the contents of the basis3.4 folder and running apt-get dist-upgrade again, the upgrade process proceeded to completion.
Note: I only removed the contents of the basis3.4 folder, not the folder itself. Otherwise, the dpkg upgrade process got stuck again and complained that /usr/lib/libreoffice/basis3.4 did not exist, so cannot removed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: libreoffice-base-core 1:3.5.0~beta2-2ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-8.15-generic 3.2.0
Uname: Linux 3.2.0-8-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Sat Jan 14 00:21:12 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111215)
SourcePackage: libreoffice
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sam_ (and-sam)]

Not a dupe of bug 804943 which is about Oneiric blcr kernel module.
Make it a dupe of Bug #915271

[Rigved Rakshit (rigved)]

This bug is possibly a duplicate of 916178, 916179 and 916181. But this is not a duplicate of bug 804943.