I install the version kdenlive-25.12.0-B and kdenlive not start in my system.
Solution: install the last stable version: 25.08.03
The latest stable is 25.12 now .. so blocked here too. on openSUSE Tumbleweed OSS packages
I had a previous configuration file. kdenliverc if I rename it, then kdenlive will start again with new configuration. This is a workaround, but then all settings, title configuration, effects, luts, layouts have to be redone, which represent a lot of efforts and quite amount of time. As the previous configuration was working with 25.08, it certains contains some data which broke completely 25.12 ...