I tried that too, and got:
root@antix1:/home/toshiba# dpkg -i --force-overwrite /var/cache/apt/archives/init-system-helpers_1.28+nmu1.0nosystemd1_all.deb
dpkg: error processing archive /var/cache/apt/archives/init-system-helpers_1.28+nmu1.0nosystemd1_all.deb (--install):
cannot access archive: No such file or directory
Errors were encountered while processing:
/var/cache/apt/archives/init-system-helpers_1.28+nmu1.0nosystemd1_all.deb
I changed the repositories. I had
========= SCRAPER REMOVED AN EMBEDDED LINK HERE ===========
url was:"http://nl.mxrepo.com/antix/testing/"
linktext was:"http://nl.mxrepo.com/antix/testing/"
====================================
ticked, after removing I was able to install /init-system-helpers_1.22
After that synaptic was running without an error message.
A few weeks ago I chose 'testing' for a newer package, but did not untick it.
Thanks for helping
Tian Lan