simple incrementing directory

[horse]

the website is the usual
http://pictures.tumblr.com/page/2

I've made the build URL as
http://pictures.tumblr.com/page/[2-100;1]
and copied into "content" box

and this gives me a list of directories with incrementing URL's

how do I then download all the pictures on each of those pages?

downloadall just says no downloads have been selected

unfortunately the jpgs on each page are all like
http://67.media.tumblr.com/5b77aa5e81.. ... o1_500.jpg
rather than incrementing.

I'm sure this "just worked" in the past
Thanks