Caused by: java.lang.NoClassDefFoundError: org/drools/event/DebugProcessEventListener ------------------------------------------------------------------------------------- Key: DROOLS-396 URL: https://issues.jboss.org/browse/DROOLS-396 Project: Drools Issue Type: Bug Affects Versions: 6.0.0.Final Reporter: leonardo lizana Priority: Critical Attachments: noclassdeffound.zip I'm trying to testing latest version of drools 6.0.1.Final version and i have the issue of " java.lang.NoClassDefFoundError: org/drools/event/DebugProcessEventListener" . However, i can see class is now on the the following path "org.drools.core.event.DebugProcessEventListener" and why the context is seeking in org/drools/event/DebugProcessEventListener. instead of "org.drools.core.event.DebugProcessEventListener" is there anything that i'm doing bad? * with drools 5.5 everything is working OK. Here is my pom.xml -------------------------- <dependency> <groupId>org.drools</groupId> <artifactId>knowledge-api</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>org.drools</groupId> <artifactId>drools-core</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>org.drools</groupId> <artifactId>drools-compiler</artifactId> <version>${drools.version}</version> </dependency> <dependency> <groupId>org.drools</groupId> <artifactId>drools-spring</artifactId> <version>5.5.0.Final</version> </dependency> here is the log error: ---------------------------- Caused by: java.lang.NoClassDefFoundError: org/drools/event/DebugProcessEventListener at org.drools.container.spring.namespace.KnowledgeSessionDefinitionParser.parseInternal(KnowledgeSessionDefinitionParser.java:115) at org.springframework.beans.factory.xml.AbstractBeanDefinitionParser.parse(AbstractBeanDefinitionParser.java:59) at org.springframework.beans.factory.xml.NamespaceHandlerSupport.parse(NamespaceHandlerSupport.java:73) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1338) at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1328) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135) at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493) at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390) Here is the contex-drools.xml ------------------------------------- <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:drools="http://drools.org/schema/drools-spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://drools.org/schema/drools-spring http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe... default-autowire="byName"> <drools:resource id="rulesEnergyUsage" type="DRL" source="classpath:com/aepenergy/b2b/miscpull/rules/rulesEnergyUsage.drl"/> <drools:kbase id="kBaseEnergyUsage"> <drools:resources> <drools:resource ref="rulesEnergyUsage"/> </drools:resources> </drools:kbase> <drools:ksession id="kSessionEnergyUsage" kbase="kBaseEnergyUsage" type="stateful"/> </beans>