Traceback (most recent call last):
  File "/usr/bin/install-package", line 206, in commit
    result = self._cache.commit(self.fprogress,self.iprogress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 277, in commit
    res = self.installArchives(pm, installProgress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 252, in installArchives
    res = installProgress.run(pm)
  File "/usr/lib/python2.6/dist-packages/apt/progress.py", line 281, in run
    res = pm.DoInstall(self.writefd)
SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)