Obsidian Conflict Forums

I downloaded this mod recently, due to the fact it looked awesome and had some good models as well. However, I have a rather major problem. Every time I attempt to connect to a server, the message "the server is using a different class table" comes up, meaning I can't join. I tried to find some information on the steam forums, but they're not very helpful at all. Any advice on how to fix this would be greatly appreciated.

Sounds like your game isn't up to date. Do you have the latest patch?