compile:
    [javac] Compiling 729 source files to D:\games2\l2j_svn\L2_GameServer\build\classes
    [javac] D:\games2\l2j_svn\L2_GameServer\java\net\sf\l2j\gameserver\model\L2PcInstance.java:120: duplicate class: net.sf.l2j.gameserver.model.L2PcInstance
    [javac] public final class L2PcInstance extends L2PlayableInstance
    [javac] ^
    [javac] Note: Some input files use unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.
    [javac] 1 error