LazyInitializationException in release management plugin on chainStart

net.sf.hibernate.LazyInitializationException: Failed to lazily initialize a collection - no session or session was closed
	at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:209)
	at net.sf.hibernate.collection.PersistentCollection.write(PersistentCollection.java:84)
	at net.sf.hibernate.collection.Map.put(Map.java:124)
	at com.atlassian.bamboo.plugins.brmp.action.BRMPPreChainAction.execute(BRMPPreChainAction.java:134)
	at com.atlassian.bamboo.chains.ChainPluginSupportImpl.chainStarted(ChainPluginSupportImpl.java:67)
	at com.atlassian.bamboo.chains.ChainExecutionManagerImpl.start(ChainExecutionManagerImpl.java:113)
	at sun.reflect.GeneratedMethodAccessor245.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.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
	at $Proxy49.start(Unknown Source)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.startWithLockTaken(PlanExecutionManagerImpl.java:174)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.access$100(PlanExecutionManagerImpl.java:39)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl$2.call(PlanExecutionManagerImpl.java:155)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.doWithProcessLock(PlanExecutionManagerImpl.java:306)
	at com.atlassian.bamboo.plan.PlanExecutionManagerImpl.start(PlanExecutionManagerImpl.java:148)
	at com.atlassian.bamboo.v2.trigger.ChangeDetectionListener.handleEvent(ChangeDetectionListener.java:50)
	at com.atlassian.event.legacy.LegacyListenerHandler$LegacyListenerInvoker.invoke(LegacyListenerHandler.java:55)
	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$2.run(AsynchronousAbleEventDispatcher.java:60)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$2.run(NamedThreadFactory.java:50)
	at java.lang.Thread.run(Thread.java:637)