Thanks revoltism: my Ubuntu is using a french localization, with a folder called Téléchargement instead of Download. Like NicoDup, a simple move of the .iso file in an another folder (without special chars in the name) solved the issue (or mare accurately: is a work around).
Thanks revoltism: my Ubuntu is using a french localization, with a folder called Téléchargement instead of Download. Like NicoDup, a simple move of the .iso file in an another folder (without special chars in the name) solved the issue (or mare accurately: is a work around).