Re: [rules-users] Problem creating package - validateUniqueRuleNames(PackageBuilder.java:830)

Following is my code: KnowledgeBuilderConfiguration kbc = KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration(); kbc.setProperty("drools.dialect.java.compiler", "JANINO"); KnowledgeBuilder builder = null; builder = KnowledgeBuilderFactory.newKnowledgeBuilder(kbc); Reader drlSource = new InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDrlSource())); //ruleset.getDrlSource() = com/cit/myDrl.dslr Reader dslSource = new InputStreamReader(RVEngine.class.getResourceAsStream(ruleset.getDslSource())); builder.add(ResourceFactory.newReaderResource(dslSource), ResourceType.DSL); builder.add(ResourceFactory.newReaderResource(drlSource), ResourceType.DSLR);  KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();  kbase.addKnowledgePackages(builder.getKnowledgePackages()); no matter what I type in my dslr (drl) file I get the following exception on the highlighted line; ANY IDEA???? I have 1 rule or No rule it still throws the same exception. Does it have to do with any jar files? Caused by: java.lang.NullPointerException      at org.drools.compiler.PackageBuilder.validateUniqueRuleNames(PackageBuilder.java:830)      at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:555)      at org.drools.compiler.PackageBuilder.addPackageFromDslr(PackageBuilder.java:355)      at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:461)      at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) saleem _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users