Seems the new install script tries to do some systemd magic, causing the installation to fail.

[peterwilli]

I pulled this from my ~/.getamp.log:

Setting up xauth (1:1.1-0ubuntu1) ...
Setting up libperl5.30:amd64 (5.30.0-9build1) ...
Setting up lib32gcc1 (1:10-20200411-0ubuntu1) ...
Setting up perl (5.30.0-9build1) ...
Setting up lib32stdc++6 (10-20200411-0ubuntu1) ...
Setting up liberror-perl (0.17029-1) ...
Setting up git (1:2.25.1-1ubuntu3) ...
Setting up ampinstmgr (1.9.9.8) ...
Created symlink /etc/systemd/system/multi-user.target.wants/ampinstmgr.service → /etc/systemd/system/ampinstmgr.service.
Created symlink /etc/systemd/system/multi-user.target.wants/amptasks.service → /etc/systemd/system/amptasks.service.
Created symlink /etc/systemd/system/multi-user.target.wants/amptasks.timer → /etc/systemd/system/amptasks.timer.
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
dpkg: error processing package ampinstmgr (--configure):
 installed ampinstmgr package post-installation script subprocess returned error exit status 1
Processing triggers for libc-bin (2.31-0ubuntu9) ...
Processing triggers for mime-support (3.64ubuntu1) ...
Errors were encountered while processing:
 ampinstmgr
E: Sub-process /usr/bin/dpkg returned an error code (1)