Blow me, it works! Why doesn't the built-in Firefox 'Save Page As...' work as well as this add-on? It used to work, but for some reason, it just will not download any html pages these days? I like the way it's all-in-one solution, no need for a separate directory to store files in. It's not clear where the file is saved to, or how to define the download directory. I've since found out that this can be done, by ticking the 'Save as' box in settings - so problem solved! A great Add-on, keep up the good work.