package python-virtkey 0.60.0-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Output from Synaptic:

Processing triggers for python-support ...
Errors were encountered while processing:
 python-virtkey
 onboard
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
Setting up python-virtkey (0.60.0-0ubuntu1) ...
file does not exist: /usr/lib/python2.6/dist-packages/python_virtkey-0.60.0.egg-info
pycentral: pycentral pkginstall: error byte-compiling files (1)
pycentral pkginstall: error byte-compiling files (1)
dpkg: error processing python-virtkey (--configure):
 subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of onboard:
 onboard depends on python-virtkey (>= 0.60.0); however:
  Package python-virtkey is not configured yet.
dpkg: error processing onboard (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 python-virtkey
 onboard

ProblemType: Package
DistroRelease: Ubuntu 10.10
Package: python-virtkey 0.60.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-22.33-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic i686
Architecture: i386
Date: Mon Sep 27 09:14:36 2010
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
SourcePackage: virtkey
Title: package python-virtkey 0.60.0-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1