package python-uno 1:3.4.4-0ubuntu1 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1

[Nick Burrett]

This was in the screen output during a run of do-release-upgrade -d. I'm upgrading from 11.10.

Processing triggers for gnome-menus ...
Processing triggers for hicolor-icon-theme ...
Processing triggers for gnome-icon-theme ...
Processing triggers for ureadahead ...
Errors were encountered while processing:
 /var/cache/apt/archives/python-uno_1%3a3.5.1-1ubuntu4_amd64.deb
Error in function:

A fatal error occurred

Please report this as a bug and include the files
/var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in
your report. The upgrade has aborted.
Your original sources.list was saved in
/etc/apt/sources.list.distUpgrade.

SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)

(apport-gtk:1336): Gtk-WARNING **: Error loading theme icon 'window-close' for stock: Unrecognized image file format

(apport-gtk:1336): Gtk-WARNING **: Error loading theme icon 'image-missing' for stock: Unrecognized image file format

(apport-gtk:1336): Gtk-WARNING **: Error loading theme icon 'gtk-cancel' for stock: Unrecognized image file format
ERROR: hook /usr/share/apport/general-hooks/ubuntu.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 646, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 37, in add_info
    check_attachment_for_errors(report, log)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 137, in check_attachment_for_errors
    if attachment in report and re.search(grub_error, report[attachment], re.MULTILINE):
  File "/usr/lib/python2.7/re.py", line 142, in search
    return _compile(pattern, flags).search(string)
TypeError: expected string or buffer

(apport-gtk:1336): Gtk-WARNING **: Error loading theme icon 'gtk-cancel' for stock: Unrecognized image file format

(apport-gtk:1336): Gtk-WARNING **: Error loading theme icon 'gtk-cancel' for stock: Unrecognized image file format

Could not install the upgrades

The upgrade has aborted. Your system could be in an unusable state. A

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: python-uno 1:3.4.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-16.29-generic 3.0.20
Uname: Linux 3.0.0-16-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Tue Apr 3 10:56:34 2012
ErrorMessage: ErrorMessage: subprocess new pre-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
SourcePackage: libreoffice
Title: package python-uno 1:3.4.4-0ubuntu1 failed to install/upgrade: ErrorMessage: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-04-03 (0 days ago)