Hi Eric,
thanks a lot, tried to start KStars with "gdb kstars", followed by "r", this resulted in the following message:
astroberry@astroberry:~$ gdb kstars
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Reading symbols from kstars...Reading symbols from /usr/lib/debug//usr/bin/kstars...done.
done.
(gdb) r
Starting program: /usr/bin/kstars
Program received signal SIGSEGV, Segmentation fault.
0x76fd9dde in ?? () from /lib/ld-linux-armhf.so.3
Then, with the telescope and ccd driver set to the respective simulator, and only assigning the Astroberry Focuser, I eventually managed to generate a log file, see attachment.
[2018-06-06T20:36:45.655 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2018-06-06T18:36:45: Driver indi_rpifocus: : symbol lookup error: undefined symbol: _ZN4INDI16FocuserInterface20SetFocuserCapabilityEj"
[2018-06-06T20:36:45.656 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "Child process 1995 died"
[2018-06-06T20:36:45.656 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2018-06-06T18:36:45: Driver indi_rpifocus: stderr EOF"
[2018-06-06T20:36:45.656 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2018-06-06T18:36:45: Driver indi_rpifocus: restart #1"
[2018-06-06T20:36:45.656 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: "2018-06-06T18:36:45: Driver indi_rpifocus: pid=1996 rfd=6 wfd=16 efd=18"
[2018-06-06T20:36:45.656 CEST DEBG ][ org.kde.kstars.indi] - INDI Server: ""
[2018-06-06T20:36:45.657 CEST CRIT ][ org.kde.kstars.indi] - INDI driver "indi_rpifocus" crashed!
Many thanks in advance for any support!
Btw: Minor bug unrelated bug noted - for Munich , Germany there are two cities listed in the geographic settings. One of them, i.e. "munich" has wrong coordinates assigned.