Corruption due to LUT files
My project and videos are in an external drive and the LUTS are in the home directory. The effect was added to the track and not individually to clips.
You may find attached the .kdenlive file and the LUTS.
carnaval1.kdenlive Video2Log_HR_150.cube LC3DL_Fuji3510_log2hd_CUSPclip.cube