package python-uno 1:3.5.0-2ubuntu1 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1

On partial upgrade this package bugged out and wouldn't install.

The partial upgrade was selected from the Update Manager menu when it told me that earlier updates hadn't been completely installed.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: python-uno 1:3.5.0-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic-pae 3.2.11
Uname: Linux 3.2.0-19-generic-pae i686
ApportVersion: 1.95-0ubuntu1
Architecture: i386
Date: Fri Mar 23 11:00:03 2012
ErrorMessage: ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
SourcePackage: libreoffice
Title: package python-uno 1:3.5.0-2ubuntu1 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-03-14 (9 days ago)