Force.com: Resolving the Destination URL not reset exception

package com.rickross;

import com.sforce.soap.enterprise.Connector;
import com.sforce.soap.enterprise.EnterpriseConnection;
import com.sforce.soap.enterprise.LoginResult;
import com.sforce.soap.enterprise.sobject.Account;
import com.sforce.soap.enterprise.sobject.SObject;
import com.sforce.ws.ConnectionException;
import com.sforce.ws.ConnectorConfig;

public class BrokenDemo 
{
	public static void main(String[] args) 
		throws ConnectionException 
	{
		System.out.println("Starting Broken Demo");
		ConnectorConfig config = new ConnectorConfig();
		config.setManualLogin(true);	
		EnterpriseConnection conn = 
			Connector.newConnection(config);
		LoginResult result = 
			conn.login("username", "pwd+token");
		if (!result.getPasswordExpired())
		{
			Account account = new Account();
			account.setName("Test from Java");
			// Won't work.. this will throw 
			/*
			 * [UnexpectedErrorFault 
			 * [ApiFault  exceptionCode='UNKNOWN_EXCEPTION'
 				exceptionMessage='Destination URL not reset. 
 				The URL returned from login must be set in 
 				the SforceService'
			   ]
			 */
			conn.create(new SObject[]{ account });

			conn.logout();
		}
	}
}

public class WorkingDemo 
{
	public static void main(String[] args) 
		throws ConnectionException 
	{
		System.out.println("Starting Working Demo");
		ConnectorConfig config = new ConnectorConfig();
		config.setManualLogin(true);	
		EnterpriseConnection conn = 
			Connector.newConnection(config);
		LoginResult loginResult = 
			conn.login("username", "pwd+token");
		if (!loginResult.getPasswordExpired())
		{
			System.out.println("Logged in");
			
			// once you log in, you need to create a new 
			// config and get the session and server 
			// details from the login results and 
			// create a new connection with this info
			ConnectorConfig newConfig = new ConnectorConfig();
			newConfig.setSessionId(
					loginResult.getSessionId());
			newConfig.setServiceEndpoint(
					loginResult.getServerUrl());
			conn = Connector.newConnection(newConfig);
	        
			Account account = new Account();
			account.setName("Test from Java");

			conn.create(new SObject[]{ account });
			
			System.out.println("The account has been created!");
			
			conn.logout();
		}
	}
}