Has anyone come across this issue ... I really need to get this issue fixed. Any advice would be helpful! Exception in thread "Thread-163" java.lang.RuntimeException: Unknown accessor type: org.mvel2.optimizers.impl.refl.collection.ArrayCreator@690c2a7a at org.drools.rule.constraint.ConditionAnalyzer.analyzeAccessor(ConditionAnalyzer.java:246) at org.drools.rule.constraint.ConditionAnalyzer.analyzeNode(ConditionAnalyzer.java:232) at org.drools.rule.constraint.ConditionAnalyzer.statementToExpression(ConditionAnalyzer.java:449) at org.drools.rule.constraint.ConditionAnalyzer.readInvocationParams(ConditionAnalyzer.java:432) at org.drools.rule.constraint.ConditionAnalyzer.analyzeAccessor(ConditionAnalyzer.java:327) at org.drools.rule.constraint.ConditionAnalyzer.analyzeExpressionNode(ConditionAnalyzer.java:308) at org.drools.rule.constraint.ConditionAnalyzer.analyzeAccessor(ConditionAnalyzer.java:268) at org.drools.rule.constraint.ConditionAnalyzer.analyzeNode(ConditionAnalyzer.java:232) at org.drools.rule.constraint.ConditionAnalyzer.analyzeSingleCondition(ConditionAnalyzer.java:109) at org.drools.rule.constraint.ConditionAnalyzer.analyzeCondition(ConditionAnalyzer.java:102) at org.drools.rule.constraint.ConditionAnalyzer.analyzeCondition(ConditionAnalyzer.java:73) at org.drools.rule.constraint.MvelConditionEvaluator.getAnalyzedCondition(MvelConditionEvaluator.java:83) at org.drools.rule.constraint.MvelConstraint.executeJitting(MvelConstraint.java:218) at org.drools.rule.constraint.MvelConstraint.access$000(MvelConstraint.java:41) at org.drools.rule.constraint.MvelConstraint$1.run(MvelConstraint.java:202) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:662) -- View this message in context: http://drools.46999.n3.nabble.com/stuck-Unknown-accessor-type-org-mvel2-o... Sent from the Drools: User forum mailing list archive at Nabble.com.