Class Cast Exception on obtainMessage from Pool

[Paschalis]

When i obtain message from message pool with the below code:

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Using java Syntax Highlighting

1.                         ServerSendScore serverSendScore = (ServerSendScore) mMessagePool
2.                                         .obtainMessage(FLAG_MESSAGE_SERVER_SEND_SCORE);
3.                         // new ServerSendScore(mCode);
4.  
5.                         // Send it to client
6.                         try {
7.                                 mSocketServer.sendBroadcastServerMessage(serverSendScore);
8.                         } catch (IOException e) {
9.                                 // TODO Auto-generated catch block
10.                                 e.printStackTrace();
11.                         }
12.  
13.                         mMessagePool.recycleMessage(serverSendScore);

Parsed in 0.031 seconds, using GeSHi 1.0.8.4

I get the below exception:

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1. 04-22 10:00:02.142: E/AndroidRuntime(28894): Caused by: java.lang.ClassCastException: cy.ac.ucy.AndroidTeam.Connection.Client.ClientSendScore
2. 04-22 10:00:02.142: E/AndroidRuntime(28894):    at cy.ac.ucy.AndroidTeam.Game.MultiplayerGame$ServerInformClientAboutScore.doInBackground(MultiplayerGame.java:247)
3. 04-22 10:00:02.142: E/AndroidRuntime(28894):    at android.os.AsyncTask$2.call(AsyncTask.java:185)
4. 04-22 10:00:02.142: E/AndroidRuntime(28894):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:306)
5. 04-22 10:00:02.142: E/AndroidRuntime(28894):    ... 4 more
6.  

Parsed in 0.032 seconds, using GeSHi 1.0.8.4

Whats the problem with that casting??

Also my game uses Box2D, and without MessagePools, the moving sprite, freezes..