Created attachment 125174 [details] Screenshot of error message after action 1. SUMMARY STEPS TO REPRODUCE 1. File/Open 2. 3. OBSERVED RESULT See screenshot attached The project I opened had been compiled and saved by Kdenlive version 18.4 installed on opensuse Leap 15.1 while the error occured on Leap 15.2 alpha codecs ffmpeg were installed EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Please try with the current Kdenlive AppImage version 19.12.1 to see if there are any packaging issues https://files.kde.org/kdenlive/release/ If the problem/issue doesn't occur when using the AppImage, then it's your configuration or packaging. Delete following files: kdenliverc, kdenlive-appimagerc see here https://community.kde.org/Kdenlive/Configuration. Try again.
As described above can you please try with the appimage (latest version is 20.12.2 at the moment, https://kdenlive.org/en/download/) and report here whether this is still happening?
As that bug report happened more than a year ago I cannot recall the details of it. However, I reported bug #433654 more recently which occurred with kdenlive-20.12.2-x86_64.appimage. I can now confirm that that non-conformance behaviour hasn't occurred again recently. I now manage to open stored projects as expected. I can only speculate on why it happened before.