Shoutbox

I've just been trying it out and i can't download it from that page either, but i found a solution which works for me. Instead of installing from that page, click on the title name of the theme you want eg. https://addons.update.mozilla.org/themes/moreinfo...ar&numpg=10&id=370 for the platinum theme. Click the install now on this page. It might say it could not download the file, but it still gets added to firefox themes.