Coderus, maybe gdb may gives you a better idea of my problems.
This is the crash:


Application active
[PageStack] selectPhonebook
Missing separate debuginfo for /usr/lib/qt5/plugins/contacts/libqtcontacts_sqlite.so
Try: zypper install -C "debuginfo(build-id)=0ad7d4e0a38ec6f2037daea650cba3fa5674d69c"
The 'mergePresenceChanges' option has not been configured - presence changes will only be reported via ContactManagerEngine::contactsPresenceChanged()
[D 16:25:35 CLIENT] Have "937" contacts

Program received signal SIGSEGV, Segmentation fault.
0x400a7b70 in QtContacts::QContactDetail::value(int) const () from /usr/lib/libQt5Contacts.so.5
(gdb)


Edit: I have several double Pphonebook entries which I simply merged in the Jolla handest. As far as I understand the debug message, this may cause the problem ('mergePresenceChanges' option has not been configured)?