diff --git a/org/homelinux/largo/checkers/KIBoard.java b/org/homelinux/largo/checkers/KIBoard.java
--- a/org/homelinux/largo/checkers/KIBoard.java
+++ b/org/homelinux/largo/checkers/KIBoard.java
@@ -9,7 +9,7 @@
 import org.homelinux.largo.games.board.checkersboard.CheckersBoard;
 
 public class KIBoard extends CheckersBoard {
-    static final long serialVersionUID = 250408;
+    static final long serialVersionUID = 1L;
     static final int game_const = 500;
 
     protected boolean SIMU_DEBUG = false;