Hi everybody. I am having a problem to instantiate a console application with Drools and Sping. With Spring, I am able to instanciate a bean and print its value to console, but with Spring + Drools I get this error: Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'kbase': Invocation of init method failed; nested exception is java.lang.RuntimeException: Unable to parser Reader at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409) at java.security.AccessController.doPrivileged(Native Method) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) at com.test.Test.main(Test.java:10) Caused by: java.lang.RuntimeException: Unable to parser Reader at org.drools.compiler.DrlParser.getParser(DrlParser.java:313) at org.drools.compiler.DrlParser.parse(DrlParser.java:141) at org.drools.compiler.DrlParser.parse(DrlParser.java:147) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:263) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:458) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:519) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) at org.drools.container.spring.beans.KnowledgeBaseBeanFactory.afterPropertiesSet(KnowledgeBaseBeanFactory.java:103) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335) ... 15 more Caused by: java.lang.NullPointerException at java.io.FilterInputStream.close(Unknown Source) at sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream.close(Unknown Source) at sun.nio.cs.StreamDecoder.implClose(Unknown Source) at sun.nio.cs.StreamDecoder.close(Unknown Source) at java.io.InputStreamReader.close(Unknown Source) at org.antlr.runtime.ANTLRReaderStream.load(ANTLRReaderStream.java:92) at org.antlr.runtime.ANTLRInputStream.<init>(ANTLRInputStream.java:68) at org.antlr.runtime.ANTLRInputStream.<init>(ANTLRInputStream.java:52) at org.antlr.runtime.ANTLRInputStream.<init>(ANTLRInputStream.java:48) at org.antlr.runtime.ANTLRInputStream.<init>(ANTLRInputStream.java:40) at org.drools.compiler.DrlParser.getParser(DrlParser.java:308) ... 24 more I use eclipse, and running from the IDE Spring + Drools in a console application works fine. This problem happens when I generate an executable jar and try the "java -jar" command. My main method is below public static void main(String[] args) { ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("appConfig.xml"); StatefulKnowledgeSession ksession = (StatefulKnowledgeSession) context.getBean("ksession"); System.out.println(ksession); } And my applicationContext.xml is below <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:drools="http://drools.org/schema/drools-spring" xmlns:camel="http://camel.apache.org/schema/spring" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://drools.org/schema/drools-spring http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe... http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd"> <drools:kbase id="kbase"> <drools:resources> <drools:resource source="classpath:knowledgebase-config.xml" type="CHANGE_SET" /> </drools:resources> </drools:kbase> <drools:ksession id="ksession" type="stateful" kbase="kbase" /> </beans> Any clue of what is cousing the problem? Thank you very much. Regards, Anderson