SUMMARY An error occur when plasmashell tries to load org.kde.plasma.kickerdash plasmoids. Looking at logs I found this: plasmashell[16922]: kf.package: Could not find required file "mainscript" for package "/usr/share/plasma/plasmoids/org.kde.plasma.kickerdash/" should be QList("ui/main.qml") plasmashell[16922]: ASSERT: "path == QStringLiteral("/") || QDir(path).canonicalPath() + QLatin1Char('/') == path" in file ./src/kpackage/package.cpp, line 274 The issue seems to be caused by the convertion of kicker to plasma_add_applet and the consequent usage of "X-Plasma-RootPath": "org.kde.plasma.kicker" in org.kde.plasma.kickerdash metadata. The issue https://bugs.kde.org/show_bug.cgi?id=507893 should have fixed this, but, I guess, something is now trying to validate the content path that is not in the expected format STEPS TO REPRODUCE 1. Click on 'show alternatives' on application menu widget OBSERVED RESULT Plasmashell crash EXPECTED RESULT Can choose between application launchers SOFTWARE/OS VERSIONS Operating System: KDE neon User Edition KDE Plasma Version: 6.5.1 KDE Frameworks Version: 6.19.0 Qt Version: 6.9.2 Kernel Version: 6.14.0-34-generic (64-bit) Graphics Platform: Wayland Processors: 16 × Intel® Core™ i9-9880H CPU @ 2.30GHz Memory: 32 GiB of RAM (31.0 GiB usable) Graphics Processor 1: Intel® UHD Graphics 630 Graphics Processor 2: Quadro T2000