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java.lang.IndexOutOfBoundsException: Index: 0, Size: 0	at java.util.ArrayList.rangeCheck(Unknown Source)	at java.util.ArrayList.remove(Unknown Source)	at net.sf.freecol.common.model.BuildQueue.remove(BuildQueue.java:127)	at net.sf.freecol.server.model.ServerColony.csNewTurn(ServerColony.java:315)	at net.sf.freecol.server.model.ServerPlayer.csNewTurn(ServerPlayer.java:1390)	at net.sf.freecol.server.model.ServerGame.csNewTurn(ServerGame.java:316)	at net.sf.freecol.server.control.InGameController.endTurn(InGameController.java:570)	at net.sf.freecol.server.control.InGameInputHandler$24.handle(InGameInputHandler.java:314)	at net.sf.freecol.common.networking.CurrentPlayerNetworkRequestHandler.handle(CurrentPlayerNetworkRequestHandler.java:75)	at net.sf.freecol.server.control.InputHandler.handle(InputHandler.java:120)	at net.sf.freecol.server.networking.DummyConnection.ask(DummyConnection.java:137)	at net.sf.freecol.server.ai.AIMessage.ask(AIMessage.java:103)	at net.sf.freecol.server.ai.AIMessage.askHandling(AIMessage.java:141)	at net.sf.freecol.server.ai.AIMessage.sendMessage(AIMessage.java:208)	at net.sf.freecol.server.ai.AIMessage.sendTrivial(AIMessage.java:237)	at net.sf.freecol.server.ai.AIMessage.askEndTurn(AIMessage.java:464)	at net.sf.freecol.server.ai.AIInGameInputHandler$2.run(AIInGameInputHandler.java:456)