The other day I did my regular zypper dup and a reboot on my workstation. Since then I got an issue with plasma that crashes. After logon I get the usual splash screens but when my desktop loads I get a popup telling me that plasma crashed leaving me with an empty desktop nor panels or taskbars. Everthing else is running, X is working, applications from the last session are opened and I can use alt+f2 to launch applications as long as I know the correct command line syntax for them.
How can I troubleshoot this?