Preparing to replace dhcp3-server 3.1.3-2ubuntu3.3 (using .../dhcp3-server_4.1.ESV-R4-0ubuntu5.2_all.deb) ... invoke-rc.d: unknown initscript, /etc/init.d/dhcp3-server not found. dpkg: warning: subprocess old pre-removal script returned error exit status 100 dpkg - trying script from the new package instead ... dpkg: error processing /var/cache/apt/archives/dhcp3-server_4.1.ESV-R4-0ubuntu5.2_all.deb (--unpack): there is no script in the new version of the package - giving up