You will need to restart your Steam client to download the hotfix.
Hey everyone!
Since 0.7.5, some of you have been experiencing crashes when hosting multiplayer servers or trying to rejoin a lobby after being kicked or dropped out of the lobby.
We've been working on a fix for the past few days and we've finally managed to resolve the issue.
Hopefully you'll be able to enjoy kicking your friends' butts again in Castle Story's multiplayer. ;)
Have fun!