Fix FileDropperService to work with the new cb
Fix FileDropperService to work with the new cb

juliandescottes/piskel,smiegrin/piskel,smiegrin/piskel,smiegrin/piskel,juliandescottes/piskel,piskelapp/piskel,piskelapp/piskel,juliandescottes/piskel,GMartigny/piskel,GMartigny/piskel,zoeesilcock/piskel,zoeesilcock/piskel,GMartigny/piskel,zoeesilcock/piskel,piskelapp/piskel