There's also a launcher update available which must be downloaded from the website (the launcher can't update itself). Just download the file off of the Forest Sword page again and you should be set! To transfer your worlds over to a new installation of Forest Sword, copy data/maps over to the new data/maps. 

Hope you enjoy kicking some zombie butt,

-Hack

P.S. If you want to discuss Asunder, you can do so now over at http://forums.teamlucidic.com

We will do our best to make you feel welcome and warm and fuzzy and inside!