I have read the how-to thread.
Game version is the normal version for all players, bought from Steam. Launcher's up to date.
My friend who seems to be the problem utilizes Windows 7.
We get two errors, and we believe it to be coming from one player in the game that we often play with. The info above is based around him, and we are in a party of 4 players.
In the lobby, my friend will get randomly disconnected with the error "You have been disconnected from Kane's Wrath." or something along those lines. In the game, two errors might happen; one, a menu will pop up announcing that he has disconnected. Sometimes it doesn't show up for everyone until someone leaves.
Other times, we will get a "Kane's Wrath is out of Sync" error, disconnecting everyone.
It's very debilitating and making this game near unplayable.
The only changing of my friend's game we have done is deleting the Options.ini file which recovered itself upon launching KW again. There's no GameSpyAddress line and all the firewall things seem to be in place. I'll have the whole file available tomorrow. I couldn't find the multiplayer logs.
Thank you.