Created attachment 113263 [details] crash report with backtrace I tried to add a RGB adjutment from the "Colour correctio" effects. Every time I tried, kdenlive crashed. I tried differnt projects and different effects like White balance and all I tried caused kdenlive to crash. The RPM I use id kdenlive-17.12.3-4.fc28.x86_64 from RPMFusion. I have attached the text file from the bug report assistant which has a backtrace.
Please try with the actual Kdenlive AppImage version 18.08.2 Run the Appimage from the terminal (press CTRL + ALT + T). Move to the AppImage folder and run the .AppImage: ./Kdenlive*.AppImage
Tested with Kdenlive 18.08.2 using Flatpak. Works fine. Thanks.