this is what i get: xmart@coin:~/.multichain$ multichaind natural_coin@ip:port
MultiChain Core Daemon build 1.0 alpha 26 protocol 10006
Chain natural_coin already exists, adding ip:port to list of peers
Error: An error occurred while setting up the RPC address 127.0.0.1 port port for listening: bind: Address already in use
Error: Unable to bind to 0.0.0.0:8375 on this computer. MultiChain Core is probably already running.
Error: Failed to listen on any port. Use -listen=0 if you want this.