Staging the server and the client (.NEt Remoting)

We have a server application and many client applications which talk to each other. The configuration parameters are put in the database. Today we moved the server application to a different server. We are having the following problems both with the server and the clients.


With the server I get this error when I try to test it :
 
System.Net.Sockets.SocketException - Only one usage of each socket address is normally permitted

What I understand is that the same configuration paramters cannot be used again i.e. port number, url etc. If so how can I void the previous socket address?




with the Client :

System.Net.Sockets.SocketException - an existing connection forcibly closed by the remote host

No clue about this error?