Progress supposedly is done, keeps downloading

[MadnessEndsbutWhen]

So Im desperately trying to back up a few of my favorite blogs before the nsfw tumblr purge, and I was happy when finally it seemed the program was done with the first one (its a big blog) since the progress bar was nearing its end. However once it reached it (around 30000 files) it just... kept downloading files. It is now around 55000 files, with no end in sight. What does that mean? Is there any way to know how much there is still to go?