https://bugs.kde.org/show_bug.cgi?id=407778
--- Comment #3 from alcinos <french.ebook.lo...@gmail.com> --- Ok, let's try to get to the bottom of this. First note: your Qt version (Qt: 5.9.5) is old, and it has known bug. This means that you have to stick to the AppImage. Now, using this appimage try this: 1. Create a new project 2. Go to Project -> add color clip, chose whatever color you want 3. It will add a color clip to the bin. Check whether you can visualize it 4. Add it on the timeline, resize it and move it a bit, and check if you can preview the timeline 5. Save, close the program, then open again the project and see if you can continue editing. -- You are receiving this mail because: You are watching all bug changes.