I can not return to the screen layout as show in the Kdenlive website , I try to reconstructed by opening each item from the WIEW menu but each item is a different size and if I try to resize it will move to a different place on the screen and on top of other item.
It is just impossible
Please help

Well It's hard to figure out your problem without a screenshot, but if you are lost, you can always delete the kdenlive config file and it will come back to the default layout.

Config file is: $HOME/.kde/share/config/kdenliverc

Thank you for the pront replay, it did work very well .
Thank you again.