2012-05-13 19:52:24 [SEVERE] java.lang.NullPointerException
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.NetServerHandler.sendPacket(NetServerHandler.java:723)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.serverhook.NetServerHandlerProxy.sendPacket(NetServerHandlerProxy.java:130)
2012-05-13 19:52:24 [SEVERE]  at lishid.orebfuscator.hook.OrebfuscatorNetServerHandler.sendPacket(OrebfuscatorNetServerHandler.java:42)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.EntityTrackerEntry.updatePlayer(EntityTrackerEntry.java:235)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.EntityTracker.updatePlayers(EntityTracker.java:146)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:556)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)
2012-05-13 19:52:24 [SEVERE]  at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
2012-05-13 19:52:24 [SEVERE] Unexpected exception
java.lang.NullPointerException
 at net.minecraft.server.NetServerHandler.sendPacket(NetServerHandler.java:723)
 at net.minecraft.serverhook.NetServerHandlerProxy.sendPacket(NetServerHandlerProxy.java:130)
 at lishid.orebfuscator.hook.OrebfuscatorNetServerHandler.sendPacket(OrebfuscatorNetServerHandler.java:42)
 at net.minecraft.server.EntityTrackerEntry.updatePlayer(EntityTrackerEntry.java:235)
 at net.minecraft.server.EntityTracker.updatePlayers(EntityTracker.java:146)
 at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:556)
 at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:449)
 at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
2012-05-13 19:54:23 [INFO] GroupManager - INFO -  Data files refreshed.