Xmage Error Log

Game exception occurred: java.lang.UnsupportedOperationException: It was not possible to do the requested undo operation (bookmark 3 does not exist) context: {2},{T}: Choose a color. Add to your mana pool an amount of mana of that color equal to your devotion to that color. <i>(Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)</i>.
Server version: 1.4.4v5
mage.game.GameImpl.restoreState(GameImpl.java:644)
mage.players.PlayerImpl.playManaAbility(PlayerImpl.java:1048)
mage.players.PlayerImpl.activateAbility(PlayerImpl.java:1123)
mage.player.human.HumanPlayer.activateAbility(HumanPlayer.java:1205)
mage.player.human.HumanPlayer.activateAbility(HumanPlayer.java:1221)
mage.player.human.HumanPlayer.playManaAbilities(HumanPlayer.java:863)
mage.player.human.HumanPlayer.playManaHandling(HumanPlayer.java:787)
mage.player.human.HumanPlayer.playMana(HumanPlayer.java:768)
mage.abilities.costs.mana.ManaCostsImpl.pay(ManaCostsImpl.java:134)
mage.abilities.AbilityImpl.activate(AbilityImpl.java:394)
mage.game.stack.Spell.activate(Spell.java:127)
mage.players.PlayerImpl.cast(PlayerImpl.java:965)
mage.players.PlayerImpl.activateAbility(PlayerImpl.java:1128)
mage.player.human.HumanPlayer.activateAbility(HumanPlayer.java:1205)
mage.player.human.HumanPlayer.activateAbility(HumanPlayer.java:1213)
mage.player.human.HumanPlayer.priority(HumanPlayer.java:687)
mage.game.GameImpl.playPriority(GameImpl.java:1260)
mage.game.turn.Step.priority(Step.java:87)
mage.game.turn.Phase.playStep(Phase.java:210)
mage.game.turn.Phase.play(Phase.java:115)
mage.game.turn.Turn.play(Turn.java:152)
mage.game.GameImpl.playTurn(GameImpl.java:819)
mage.game.GameImpl.play(GameImpl.java:733)
mage.game.GameImpl.start(GameImpl.java:700)
mage.server.game.GameWorker.call(GameWorker.java:61)
java.util.concurrent.FutureTask.run(FutureTask.java:266)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
java.lang.Thread.run(Thread.java:745)