@Knurpht
Also this step with the Sauerland's package I have already behind me... The problem here has been first that the installation of the ancient package lead to a file conflict, because I had installed arj. see here: unarj-2.65-lp152.10.1.x86_64 (Sauerland's Home Project (openSUSE_Leap_15.2)) arj-3.10.22-lp152.3.38.x86_64 (@System)
So I had uninstalled arj to check this exam. Nevertheless the result is equal to ZERO. See here: $ unarj stock32.exe UNARJ (Demo version) 2.63 Copyright (c) 1991-2000 ARJ Software, Inc. Includes patches applied by SUSE/Novell 2003-2004.
Processing archive: Lager32.exe
Lager32.exe is not an ARJ archive
Which is NOT true!