we are getting the following system Errors in our bamboo box - Please help us resolve this issue

System Error Details
Build Deployments - Dev Smoke - 2.0 STAR LEO BVMF QA Smoke - Build and Deploy 136 : Unknown error occurred on 'dv0102c' when building DEPLOY-STRL20BVMFQASMKDEPL-STARBUILDCI-136. Agent will attempt process the build result...
(java.lang.NoSuchMethodError : com.atlassian.bamboo.v2.build.BuildContext.getBuildPlanDefinition()Lcom/atlassian/bamboo/v2/build/BuildPlanDefinition

Occurred: 21 Nov 2012, 1:37:13 PM
Agent: dv0102c
java.lang.NoSuchMethodError: com.atlassian.bamboo.v2.build.BuildContext.getBuildPlanDefinition()Lcom/atlassian/bamboo/v2/build/BuildPlanDefinition;
at com.atlassian.bamboo.plugins.clearcase.vcsversion.VersionWriter.call(VersionWriter.java:51)
at com.atlassian.bamboo.build.pipeline.tasks.PrepareBuildTask.runPreBuildActions(PrepareBuildTask.java:115)
at com.atlassian.bamboo.build.pipeline.tasks.PrepareBuildTask.call(PrepareBuildTask.java:88)
at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent.build(DefaultBuildAgent.java:202)
at com.atlassian.bamboo.v2.build.agent.BuildAgentControllerImpl.waitAndPerformBuild(BuildAgentControllerImpl.java:103)
at com.atlassian.bamboo.v2.build.agent.DefaultBuildAgent$1.run(DefaultBuildAgent.java:109)
at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:50)
at java.lang.Thread.run(Thread.java:662)