java.lang.NoSuchMethodError: com.atlassian.bamboo.v2.build.BuildContext.getBuildPlanDefinition()Lcom/atlassian/bamboo/v2/build/BuildPlanDefinition

2011-10-12 19:14:00,839 INFO [4-BAM::Local Agent::Agent:pool-10-thread-1] [NCoverBuildProcessor] inside NCoverBuildProcessor.call()
2011-10-12 19:14:00,840 WARN [4-BAM::Local Agent::Agent:pool-10-thread-1] [ExecuteBuildTask] Failed to execute plugin with class com.atlassian.bamboo.plugin.dotnet.ncover.NCoverBuildProcessor : L3GHEAD-GITPOLL-JOB1-12114
java.lang.NoSuchMethodError: com.atlassian.bamboo.v2.build.BuildContext.getBuildPlanDefinition()Lcom/atlassian/bamboo/v2/build/BuildPlanDefinition;
        at com.atlassian.bamboo.plugin.dotnet.ncover.NCoverBuildProcessor.call(NCoverBuildProcessor.java:242)
        at sun.reflect.GeneratedMethodAccessor336.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
        at org.springframework.orm.hibernate.HibernateInterceptor.invoke(HibernateInterceptor.java:117)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy397.call(Unknown Source)
        at com.atlassian.bamboo.build.pipeline.tasks.ExecuteBuildTask.performCustomBuildProcess(ExecuteBuildTask.java:211)
        at com.atlassian.bamboo.build.pipeline.tasks.ExecuteBuildTask.call(ExecuteBuildTask.java:91)
        at sun.reflect.GeneratedMethodAccessor336.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
        at org.springframework.orm.hibernate.HibernateInterceptor.invoke(HibernateInterceptor.java:117)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
        at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
        at $Proxy396.call(Unknown Source)
        at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.build(DefaultBuildAgent.java:198)
        at com.atlassian.bamboo.v2.build.agent.BuildAgentControllerImpl.waitAndPerformBuild(BuildAgentControllerImpl.java:99)
        at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent$1.run(DefaultBuildAgent.java:107)
        at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:50)
        at java.lang.Thread.run(Thread.java:619)

Failed to execute plugin 'NCover Results Collector' with error: com.atlassian.bamboo.v2.build.BuildContext.getBuildPlanDefinition()Lcom/atlassian/bamboo/v2/build/BuildPlanDefinition;