nautilus-actions is not configurable

[DarkTrick]

Steps to reproduce
====================

1. (install nautilus)
2. Install nautilus-actions (`apt install nautilus-actions`)
3. Restart nautilus (`killall nautilus`, `nautilus`
4. Try to configure nautilus-actions:

   - **Actual**
     - There is no menu entry for nautilus actions
     - Calling `nautilus-actions` does not work (program not found)
     - Clicking the cogwheel (top right) in nautilus doesn't show any config options
     - Preferences in nautilus don't show any config params
     - Right click in a folder -> nautilus-actions menu: Does not show a config option
   - **Expected**
     - I would have expected a new entry "nautilus-actions" or "custom actions" when clicking the cogwheel on the top right

Misc
=====

I had a previous installation, that was automatically removed by a previous ubuntu update (different bug). My settings from that installation are still valid (I can still see those entries).
I tried to `apt purge nautilus-actions` and reinstall, but
1) `purge` did not remove my previous settings
2) the situation did not change

Sys info
=========

1) 'lsb_release -rd'
Description: Ubuntu 20.04.1 LTS
Release: 20.04

2) 'apt-cache policy nautilus-actions'
nautilus-actions:
  Installed: 3.4-2
  Candidate: 3.4-2
  Version table:
 *** 3.4-2 500
        500 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nautilus-actions 3.4-2
ProcVersionSignature: Ubuntu 5.4.0-48.52-generic 5.4.60
Uname: Linux 5.4.0-48-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: XFCE
Date: Tue Sep 22 19:10:28 2020
SourcePackage: filemanager-actions
UpgradeStatus: Upgraded to focal on 2020-07-24 (60 days ago)