How Do I Fix This??

[8/9/12 7:03 AM]: java.lang.RuntimeException: Uncompilable source code - Erroneous sym type: server.model.players.ActionHandler.firstClickObjec t
[8/9/12 7:03 AM]: at server.model.players.packets.ClickObject.processPa cket(ClickObject.java:289)
[8/9/12 7:03 AM]: at server.model.players.PacketHandler.processPacket(P acketHandler.java:138)
[8/9/12 7:03 AM]: at server.model.players.Client.processQueuedPackets(C lient.java:928)
[8/9/12 7:03 AM]: at server.model.players.PlayerHandler.process(PlayerH andler.java:136)
[8/9/12 7:03 AM]: at server.Server.main(Server.java:158)