first of all I posted here coming from the Support link of this great application at http://customdesktoplogo.wikidot.com/
... in the end I cloned the folder of the last version and moved the duplicate into another main folder
now I have CustomDesktopLogo into "Program Files" and another one into "Programs"
and they can run with different settings at the same time !
why ? because I couldn't find another similar application running animated images + alpha\tranparent mode
many thanks to the developer for the great hard work !!