[rules-users] Runtime jitting exception while inserting facts

Hi All, I'm getting some wierd exception while trying to insert a fact. I'm trying to compare a string field in a rule, like metricclass == "PROCESSOR" java.lang.RuntimeException: Exception jitting: metricclass == "PROCESSOR" at org.drools.rule.constraint.MvelConstraint.jitEvaluator(MvelConstraint.java:168) at org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:137) at org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:99) at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) at org.drools.reteoo.CompositeObjectSinkAdapter.doPropagateAssertObject(CompositeObjectSinkAdapter.java:458) at org.drools.reteoo.CompositeObjectSinkAdapter.propagateAssertObject(CompositeObjectSinkAdapter.java:386) at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:211) at org.drools.reteoo.EntryPointNode.assertObject(EntryPointNode.java:239) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:336) at org.drools.common.NamedEntryPoint.insert(NamedEntryPoint.java:297) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:887) at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:846) at org.drools.impl.StatefulKnowledgeSessionImpl.insert(StatefulKnowledgeSessionImpl.java:259) at mattelli.re.ComplianceEngine.loadProductMetricDB(ComplianceEngine.java:1644) at mattelli.re.ComplianceEngine.ComplianceRunService(ComplianceEngine.java:196) at mattelli.re.ComplianceEngine.main(ComplianceEngine.java:80) Caused by: java.lang.IllegalAccessError: tried to access field org.drools.rule.builder.dialect.asm.ClassGenerator$MethodBody.mv from class org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitMethodInvocation(ASMConditionEvaluatorJitter.java:463) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitInvocation(ASMConditionEvaluatorJitter.java:447) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitEvaluatedExpression(ASMConditionEvaluatorJitter.java:335) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitExpression(ASMConditionEvaluatorJitter.java:324) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitObjectBinary(ASMConditionEvaluatorJitter.java:132) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitBinary(ASMConditionEvaluatorJitter.java:107) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitSingleCondition(ASMConditionEvaluatorJitter.java:66) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.jitCondition(ASMConditionEvaluatorJitter.java:54) at org.drools.rule.constraint.ASMConditionEvaluatorJitter$EvaluateMethodGenerator.body(ASMConditionEvaluatorJitter.java:48) at org.drools.rule.builder.dialect.asm.ClassGenerator$MethodDescr.write(ClassGenerator.java:478) at org.drools.rule.builder.dialect.asm.ClassGenerator.generateBytecode(ClassGenerator.java:50) at org.drools.rule.builder.dialect.asm.ClassGenerator.generateClass(ClassGenerator.java:58) at org.drools.rule.builder.dialect.asm.ClassGenerator.newInstance(ClassGenerator.java:64) at org.drools.rule.constraint.ASMConditionEvaluatorJitter.jit(ASMConditionEvaluatorJitter.java:30) at org.drools.rule.constraint.MvelConstraint.jitEvaluator(MvelConstraint.java:166) ... 15 more Can someone tell me the possible causes. This happens with very few facts making it even more confusing. Thanks in advance -- cheers Sumatheja Dasararaju