Yep, retrying does work. I've now reported this to Mozilla and linked to it. Thanks, Olivier!
** Bug watch added: Mozilla Bugzilla #1536530 https://bugzilla.mozilla.org/show_bug.cgi?id=1536530 ** Also affects: firefox via https://bugzilla.mozilla.org/show_bug.cgi?id=1536530 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1820514 Title: Saving a web page from Tom's Hardware forums fails To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/1820514/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs