"sudo mv /usr/share/ubiquity-slideshow/slides/index.html /usr/share/ubiquity-slideshow/slides/index.html.bak" seems to work, though the installation is quite slow.
"sudo mv /usr/share/ ubiquity- slideshow/ slides/ index.html /usr/share/ ubiquity- slideshow/ slides/ index.html. bak" seems to work, though the installation is quite slow.