Preparing to replace python-psyco 1.5.1-3 (using .../python-psyco_1.6-1_i386.deb) ...^M
pycentral: pycentral pkgprepare: not overwriting local files^M
pycentral pkgprepare: not overwriting local files^M
dpkg: error processing /var/cache/apt/archives/python-psyco_1.6-1_i386.deb (--unpack):^M
subprocess pre-installation script returned error exit status 1^M
Thanks for your bugreport.
Here is what is causing the error:
Preparing to replace python-psyco 1.5.1-3 (using .../python- psyco_1. 6-1_i386. deb) ...^M apt/archives/ python- psyco_1. 6-1_i386. deb (--unpack):^M
pycentral: pycentral pkgprepare: not overwriting local files^M
pycentral pkgprepare: not overwriting local files^M
dpkg: error processing /var/cache/
subprocess pre-installation script returned error exit status 1^M