Package: dpkgVersion: 1.21.21 On a new install start-stop-daemon is not installed (or is installed to wrong place) It may be the installer not the package.
The install is Debian Testing (Bookworm) as at about 23.00 on 12 March 23 (UTC) to a USB drive on a Raspberry 4B with 4 G RAM I used the procedure found at https://forums.raspberrypi.com/viewtopic.php?t=282839(Expert menu driven install) Install included mate desktop. Install proceeded uneventfully to successful conclusion. On first use of Synaptic the error message shown in attachment is displayed. I could not find the start-stop-daemon where expected from the error message. (dpkg: warning: "start-stop-daemon" not found in PATH or not exectuable) I copied an old version of the daemon from a Debian 11 install to the location and Synaptic then worked. I did a re-install of dpkg which overwrote whatever bits of dpkg were originally installed. (sorry) I encountered this problem in Debian 11 on the RasPi.. I have not had this problem on amd64 or i386 although I have not tried Bookworm. Chris Barnard