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When attempting to upgrade or install NTA 4.1 or lower (v4) onto the primary poller, the Core Businesslayer Plugin fails to load. Indications in the BusinessLayerHost.log give a FATAL error when attempting to load the plugin:
2015-12-11 08:49:43,888  ERROR SolarWinds.Orion.Common.SWEventLogging - Unhandled Exception caught in Core Service Engine startup. RunQuery failed, check fault information.
2015-12-11 08:49:43,888  FATAL SolarWinds.Orion.Core.BusinessLayer.CoreBusinessLayerPlugin - Unhandled Exception caught in plugin startup.
System.ServiceModel.FaultException`1[SolarWinds.InformationService.Contract2.InfoServiceFaultContract]: RunQuery failed, check fault information. (Fault Detail is equal to InfoServiceFaultContract [ System.NullReferenceException: Object reference not set to an instance of an object.
at SolarWinds.Data.Query.Processor.StorageTranslator.TryMakeStorageExpression(EntityExpression conceptualEntityExpression, IMappingFragment mappingFragment, SwqlExpression& storageExpression)
at SolarWinds.Data.Query.Processor.StorageTranslator.HandlePropertyFromEntityWithSinglePartitions(IEntityTypeMapping entityMapping, EntityExpression conceptualEntityExpression)
at SolarWinds.Data.Query.Processor.StorageTranslator.HandleProperty(EntityExpression entityExpression)
at SolarWinds.Data.Query.Processor.StorageTranslator.Visit(ColumnExpression column)
at SolarWinds.Data.Query.Swql.ParseTreeDuplicatorNoState.Visit(SelectClause select)
at SolarWinds.Data.Query.Processor.StorageTranslator.Visit(SelectStatement statement)
at SolarWinds.Data.Query.Processor.StorageTranslator.Process(SelectStatement statement)
This is a known bug that occurs in this version where the patch files applied normally to the primary poller have also been applied to the APE.
This issue has been resolved in NTA Primary and APE version 4.1.1. If you are unable to upgrade, remove the schemas affecting the APE:
1. Stop NetFlow Service and information services on all pollers.
2. On the APE, delete the following:
3. Start NetFlow service and information services.