Preparing to replace isight-firmware-tools 1.4.2-3 (using .../isight-firmware-tools_1.4.2-4_i386.deb) ...
Unpacking replacement isight-firmware-tools ...
rm: cannot remove `/lib/firmware/isight.fw': Is a directory
dpkg: warning: subprocess old post-removal script returned error exit status 1
dpkg - trying script from the new package instead ...
rm: cannot remove `/lib/firmware/isight.fw': Is a directory
dpkg: error processing /var/cache/apt/archives/isight-firmware-tools_1.4.2-4_i386.deb (--unpack):
 subprocess new post-removal script returned error exit status 1