Dear all,
When having a actor with no groupActorIds and you invoke the pooledTaskInstanceList component you get a exception:
10:43:42,265 ERROR [TaskMgmtSession] org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [ select distinct ti from org.jbpm.taskmgmt.exe.PooledActor pooledActor join pooledActor.taskInstances ti where pooledActor.actorId in ( ) and ti.actorId is null and ti.isSuspended != true and ti.isOpen = true ]
I think this should be fixed in jbpm.