Have you tried 7-zip? It's what use and I haven't had any issues downloading MM8. It's free btw.
(I'm assuming that you are using Banished 1.0.7? I thought I better ask even though it's unlikely that you're using a previous version.)
First, love Love LOVE all y'all's work!
I'm having a problem with the starting condition Stranded with Seeds. I've tried multiple times with different maps, terrain types and sizes, but still have no stuff (food, tools, etc.) I just tried to start a new game to see if I actually had seeds since I forgot to check that as I was focused on the lack of tools, but I had to use task manager to shut it down after 15 minutes. That might be my issue, though, and not a bug. I'm only reporting consistent lack of starting supplies. Thanks for looking into this!
I tried this start. I checked for crop seeds by placing a small crop field and a small orchard in the cleared area - I had 2 crop seeds and 1 orchard seed. However there wasn't a storage cart - so no food, tools, clothing, firewood or leather. I'll let Kralyerg know that the cart is missing.