I apologize, i remade my bootanimation with your tool and i put the ZIP in "system/customize/ressources" on my phone with RootExplorer and now it's working !
The problem was that I copied and paste the folder "part1" and the file "Desc.text" from the "bootanimation.zip" (generated by your tool) in my file "bootanimation.zip" of my theme!
And now, i copied your "bootanimation.zip" (from your tool) in the folder "system/customize/ressources" of my "theme.zip" and now it's working.
Thanks again for your work and quick reply !
Sorry for my noob question.
ps: I re-uploaded my file (for curious)
and I used "uot kitchen"
as a base with a "bootanimation" included to create my theme.