Can you run the following commands in a terminal window:
sudo apt-get clean
sudo apt-get update
sudo apt-get install -f
sudo apt-get upgrade
This should solve your problem.
See also
http://raphaelhertzog.com/2011/06/27/deciphering-one-of-dpkgs-weirdest-errors-short-read-on-buffer-copy/
** Chan
Exception during installation:
Dec 14 01:21:36 ubuntu plugininstall.py: SystemError: E:Sub-process
/usr/bin/dpkg returned an error code (1)
Dec 14 01:21:36 ubuntu plugininstall.py:
** Tags added: installer-crash
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https://bugs.launchpad.net/bugs/904109
Title:
Just crashed and stopped installing
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