Something that works in 2.12 doesn't work in 2..20

What steps will reproduce the problem?
1. I followed this simple tutorial at http://www.youtube.com/watch?v=1fLXEL4ngpE
2. When i run the server, and then the client i get this message
0:00  INFO: [kryonet] Server opened.
00:00 TRACE: [kryonet] Server thread started.
00:15 DEBUG: [kryonet] Port 54555/TCP connected to: /127.0.0.1:52642
00:15 TRACE: [kryonet] Connection listener added: 
com.esotericsoftware.kryonet.Server$1
00:15 TRACE: [kryo] Write class 9: 
com.esotericsoftware.kryonet.FrameworkMessage$RegisterTCP
00:15 DEBUG: [kryo] Write: 
com.esotericsoftware.kryonet.FrameworkMessage$RegisterTCP
00:15 TRACE: [kryo] Write field: connectionID 
(com.esotericsoftware.kryonet.FrameworkMessage$RegisterTCP)
00:15 TRACE: [kryo] Write int: 1
00:15 TRACE: [kryo] Object graph complete.
00:15 TRACE: [kryonet] Connection 1 sent TCP: RegisterTCP (6)
00:15  INFO: [kryonet] Connection 1 connected: /127.0.0.1
00:15  INFO: [SERVER] Someone is trying to connect.
00:15 TRACE: [kryonet] Unable to read TCP from: Connection 1
java.io.IOException: An existing connection was forcibly closed by the remote 
host
    at sun.nio.ch.SocketDispatcher.read0(Native Method)
    at sun.nio.ch.SocketDispatcher.read(Unknown Source)
    at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
    at sun.nio.ch.IOUtil.read(Unknown Source)
    at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
    at com.esotericsoftware.kryonet.TcpConnection.readObject(TcpConnection.java:107)
    at com.esotericsoftware.kryonet.Server.update(Server.java:192)
    at com.esotericsoftware.kryonet.Server.run(Server.java:350)
    at java.lang.Thread.run(Unknown Source)
00:15  INFO: [SERVER] Someone is trying to disconnect.
00:15  INFO: [kryonet] Connection 1 disconnected.

3. But when i change the library from 2.20 to 2.12
   Everything is fine. I dont need to change anything at all

What is the expected output? What do you see instead?
What you type in the client gets shown in the server 

What version of the product are you using? On what operating system?
2.20, problem persist in 2.18 too

Please provide any additional information below.
I create a bitbucket repository so you didnt have to look through all the 
tutorial
https://bitbucket.org/fjoseph/kryonet-error
Original issue reported on code.google.com by lovelyfa...@gmail.com on 26 Jul 2013 at 12:05
duypq94 / kryonet

Something that works in 2.12 doesn't work in 2..20 #36
