Comment 2 for bug 1252956

Here is the error from when firefox was being upgraded:

Preparing to replace firefox 25.0+build3-0ubuntu0.13.04.1 (using .../firefox_25.0+build3-0ubuntu0.13.10.1_amd64.deb) ...^M
awk: error while loading shared libraries: libsigsegv.so.2: cannot open shared object file: No such file or directory^M
Exception BrokenPipeError: BrokenPipeError(32, 'Broken pipe') in <_io.TextIOWrapper name='<stdout>' mode='w' encoding='UTF-8'> ignored^M
awk: error while loading shared libraries: libsigsegv.so.2: cannot open shared object file: No such file or directory^M
Exception BrokenPipeError: BrokenPipeError(32, 'Broken pipe') in <_io.TextIOWrapper name='<stdout>' mode='w' encoding='UTF-8'> ignored^M
dpkg: error processing /var/cache/apt/archives/firefox_25.0+build3-0ubuntu0.13.10.1_amd64.deb (--unpack):^M
 subprocess new pre-installation script returned error exit status 127^M
Please restart all running instances of firefox, or you will experience problems.^M