I have a DynaGroup expression like this: groupby resource.resourceConfiguration[group] resource.type.plugin.contains = JBossAS7 resource.type.name.contains = Managed Server recalculation fails with Caused by: java.lang.IllegalArgumentException: org.hibernate.QueryParameterException: could not locate named parameter [arg4] at org.hibernate.ejb.QueryImpl.setParameter(QueryImpl.java:176) at org.rhq.enterprise.server.resource.group.definition.framework.ExpressionEvaluator.getSingleResultList(ExpressionEvaluator.java:1027) at org.rhq.enterprise.server.resource.group.definition.framework.ExpressionEvaluator.access$300(ExpressionEvaluator.java:48) at org.rhq.enterprise.server.resource.group.definition.framework.ExpressionEvaluator$MultipleQueryIterator.next(ExpressionEvaluator.java:970) at org.rhq.enterprise.server.resource.group.definition.framework.ExpressionEvaluator$MultipleQueryIterator.next(ExpressionEvaluator.java:887) at org.rhq.enterprise.server.resource.group.definition.GroupDefinitionManagerBean.calculateGroupMembership(GroupDefinitionManagerBean.java:294)