After upgrading the jars to the latest version I am getting this when starting my rules java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) Caused by: java.lang.NoSuchFieldError: COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION at org.drools.rule.builder.PatternBuilder.setInputs(PatternBuilder.java:969) at org.drools.rule.builder.PatternBuilder.buildRelationalExpression(PatternBuilder.java:669) at org.drools.rule.builder.PatternBuilder.buildExpression(PatternBuilder.java:634) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:618) at org.drools.rule.builder.PatternBuilder.processConstraintsAndBinds(PatternBuilder.java:449) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:310) at org.drools.rule.builder.PatternBuilder.build(PatternBuilder.java:118) at org.drools.rule.builder.GroupElementBuilder.build(GroupElementBuilder.java:67) at org.drools.rule.builder.RuleBuilder.build(RuleBuilder.java:84) at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:2706) at org.drools.compiler.PackageBuilder.compileRules(PackageBuilder.java:930) at org.drools.compiler.PackageBuilder.compileAllRules(PackageBuilder.java:839) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:831) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:467) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:673) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:45) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:34) _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users