[ https://issues.jboss.org/browse/DROOLS-978?page=com.atlassian.jira.plugin... ] bing yang updated DROOLS-978: ----------------------------- Description: when i update the stateful rule in the kfs, then it gives me the NPE: the 6.3.0.Final and the 6.4.0-snapshot can throws this exception: Exception in thread "main" java.lang.NullPointerException at org.drools.core.reteoo.NodeTypeEnums.isBetaNode(NodeTypeEnums.java:88) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:254) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:166) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:123) at org.drools.core.phreak.RuleExecutor.evaluateNetwork(RuleExecutor.java:65) at org.drools.core.common.DefaultAgenda.evaluateEagerList(DefaultAgenda.java:1004) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:961) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1292) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1294) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1281) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1260) at com.test.TestAA.main(TestAA.java:103) the TestAA.java:103 is 102: kContainer.updateToVersion(releaseId); 103: session.fireAllRules(); was: when i update the stateful rule in the kfs, then it gives me the NPE: the 6.3.0.Final and the 6.4.0-snapshot can throws this exception: Exception in thread "main" java.lang.NullPointerException at org.drools.core.reteoo.NodeTypeEnums.isBetaNode(NodeTypeEnums.java:88) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:254) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:166) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:123) at org.drools.core.phreak.RuleExecutor.evaluateNetwork(RuleExecutor.java:65) at org.drools.core.common.DefaultAgenda.evaluateEagerList(DefaultAgenda.java:1004) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:961) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1292) at org.drools.core.impl.StatefulKnowledgeSessionImpl.internalFireAllRules(StatefulKnowledgeSessionImpl.java:1294) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1281) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:1260) at com.test.TestAA.main(TestAA.java:103) -- This message was sent by Atlassian JIRA (v6.4.11#64026)