I'm getting an exception at the end of a build with the new ci game plugin...

19:12:25,977 ERROR [STDERR] 2008/06/02 07:12:25 hudson.model.Executor run
SEVERE: Executor throw an exception unexpectedly
java.lang.NoSuchMethodError: hudson.plugins.violations.ViolationsBuildAction.getPreviousResult()Lhudson/plugins/violations/ViolationsBuildAction;
at hudson.plugins.cigame.rules.plugins.violation.DefaultViolationRule.evaluate(DefaultViolationRule.java:34)
at hudson.plugins.cigame.model.ScoreCard.record(ScoreCard.java:34)
at hudson.plugins.cigame.model.ScoreCard.record(ScoreCard.java:51)
at hudson.plugins.cigame.GamePublisher.perform(GamePublisher.java:45)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:309)
at hudson.model.AbstractBuild$AbstractRunner.performAllBuildStep(AbstractBuild.java:297)
at hudson.model.Build$RunnerImpl.cleanUp(Build.java:123)
at hudson.model.Run.run(Run.java:793)
at hudson.model.Build.run(Build.java:85)
at hudson.model.ResourceController.execute(ResourceController.java:70)
at hudson.model.Executor.run(Executor.java:77)