Hello again >Debian images are isohybrid. Live images too. So please try creating the >USB stick with win32diskimager >(http://sf.net/projects/win32diskimager/) as explain in the >installation manual >(https://www.debian.org/releases/stable/amd64/ch04s03.html.fr#usb-copy-isohybrid).
I tried making an usb stick with this tool, and encountered the same error I also tried using another usb stick but the result was the same i'll try to burn it to dvd tomorrow