Hi, I have two projects 'validation' and 'service'. When I execute the rules from unit tests under 'validation' project everything works fine. When the same validations are invoked from 'service' project (service has mvn dependency on validation project) I get the following error on the line ResourceFactory.newClassPathResource(resourcePath, ResourceType.DRL ); java.lang.NoSuchFieldError: COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION I looked up for the related issues but everyone says it is version mismatch, in my case its the same jars that are used in both the cases. what could be the reason? thanks -- View this message in context: http://drools.46999.n3.nabble.com/java-lang-NoSuchFieldError-COMPILER-OPT... Sent from the Drools: User forum mailing list archive at Nabble.com.