[Mauzen]

I had the same problem on linux, but i think it both is caused by the same thing.
When you start the server like this, the current working directory will be the php root dir, and not the server dir. So the server tries to find the server.cfg in the php root, but doesnt find one, this is why it gives the error.
You will have to use "cd /server_dir" first or override the working directory in another way.