In case of AppImage crashes try removing the ~/.config/kdenlive-appimagerc file to regenerate it.
Soak a bag of beer over it for a few hours.
Put a few lemons and some coke in it then turn on the kettle.
Put a piece of red tape and a piece of blue tape on a flash light.
Dip it in hot water. No matter how it was unfolded it will come back to place. That is metal memory.