package fglrx (not installed) failed to install/new pre-installation script returned error exit status 1

Xubuntu 12.04.1. Lenovo AMD64 ThinkPad Edge. Cannot install fglrx from CLI or additional drivers.

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: fglrx (not installed)
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
ApportVersion: 2.0.1-0ubuntu14
Architecture: amd64
Date: Thu Oct 18 22:03:08 2012
DuplicateSignature:
 Unpacking fglrx (from .../fglrx_2%3a8.960-0ubuntu1.1_amd64.deb) ...
 One or more files have been altered since installation.
 Uninstall will not be completed. See /etc/ati/fglrx-uninstall.log for details.
 dpkg: error processing /var/cache/apt/archives/fglrx_2%3a8.960-0ubuntu1.1_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: Xubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
SourcePackage: fglrx-installer
Title: package fglrx (not installed) failed to install/upgrade: subprocess new pre-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)