Thank you for taking the time to report this issue and helping to make
Ubuntu better.
The packages tcm and ww-scripts both contain the file /usr/bin/psf so
just one of them can be installed at a time.
According to http://packages.ubuntu.com/search?keywords=ww-
** Attachment added: DpkgTerminalLog.gz
http://launchpadlibrarian.net/20886455/DpkgTerminalLog.gz
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package tcm [modified: /var/lib/dpkg/info/tcm.list] failed to install/upgrade:
rewrite of `/usr/bin/psf', that is part of the package ww-scripts
https://bugs.launchpad.net/bugs/313558
You