Created attachment 119587 [details] gdb terminal output SUMMARY STEPS TO REPRODUCE 1. Opening a *.kdenliveproject created with KDENLIVE 18.12.1b 2. 3. OBSERVED RESULT kdenlive-19.04.0-7173596-x86_64.appimage crashes EXPECTED RESULT SOFTWARE/OS VERSIONS Linux/KDE Plasma: Linux Mint 18.11. (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Created attachment 119588 [details] That's the project file that makes Kdenlive 19.04 crash
I fiddled around with the cached files. I just deleted all that I found in USERNAME/.local/share/kdenlive and in USERNAME/kdenlive and now I can play and edit the 18.12.-project in 19.04 with no problem.
Thanks for the feedback. I update the documentation here: https://community.kde.org/Kdenlive/Configuration#GNU.2FLinux and here: https://userbase.kde.org/Kdenlive/Manual/Windows_Issues . We close this bug. If it still appears in the latest version, please feel free to re-open it and update the affected version number.