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

This is the output of dist-upgrade:

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
No apport report written because the error message indicates its a followup error from a previous failure.
                          Errors were encountered while processing:
 python-virtkey
 onboard
E: Sub-process /usr/bin/dpkg returned an error code (1)

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 x86_64
NonfreeKernelModules: nvidia
AptOrdering:
 python-virtkey: Configure
 onboard: Configure
Architecture: amd64
Date: Mon Sep 27 15:31:45 2010
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
SourcePackage: virtkey
Title: package python-virtkey 0.60.0-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1