I'm having the same problem, and it causes some severe effects - without acpid installed in a consistent state, the wacom touchpad and wifi on my laptop no longer work.
(Reading database ... 233334 files and directories currently installed.) Preparing to replace acpid 1.0.8-6 (using .../acpid_1.0.8-7_amd64.deb) ... * Stopping ACPI services... [ OK ] invoke-rc.d: initscript acpid, action "stop" failed. dpkg: warning - old pre-removal script returned error exit status 1 dpkg - trying script from the new package instead ... * Stopping ACPI services... [ OK ] invoke-rc.d: initscript acpid, action "stop" failed. dpkg: error processing /var/cache/apt/archives/acpid_1.0.8-7_amd64.deb (--unpack): subprocess new pre-removal script returned error exit status 1 * Starting ACPI services... [ OK ] invoke-rc.d: initscript acpid, action "start" failed. dpkg: error while cleaning up: subprocess post-installation script returned error exit status 1 Errors were encountered while processing: /var/cache/apt/archives/acpid_1.0.8-7_amd64.deb E: Sub-process /usr/bin/dpkg returned an error code (1) A package failed to install. Trying to recover: dpkg: error processing acpid (--configure): Package is in a very bad inconsistent state - you should reinstall it before attempting configuration. Errors were encountered while processing: acpid -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org