7 months later and im playing sim again. Checked this out and found an answer, thanks jlv this is why u the best.

I have a private server for me and my friends to play on, I use it through hamachi. It works great and we have no issues, besides when we want to do erode races. I can use erode in singleplayer with the properties " --erode x", and it works fine. But when I want to use erode on my server it doesn't ...