Hello, 1. knotes 18.12.3-1 does not start at all knotes: symbol lookup error: /usr/lib/libknotesprivate.so.5: undefined symbol: _ZN7Akonadi10Collection21markAttributesChangedEv 2. kontact 18.12.3-1 often crashes after a few seconds. When it does not, there is no knotes tab. No better result after reboot. Thanks for looking into that.