[ https://issues.jboss.org/browse/DROOLS-2122?page=com.atlassian.jira.plugi... ] Andrej Podhradsky commented on DROOLS-2122: ------------------------------------------- The problem is probably with parsing the file META-INF/kie.conf {code:title=drools-distribution-6.5.0.Final/binaries/drools-beliefs-6.5.0.Final.jar META-INF/kie.conf} [ 'assemblers' : [ new org.drools.beliefs.bayes.assembler.BayesAssemblerService() ], 'weavers' : [ new org.drools.beliefs.bayes.weaver.BayesWeaverService() ], 'runtimes' : [ new org.drools.beliefs.bayes.runtime.BayesRuntimeService() ], 'beliefs' : [ ] ] {code} versus {code:title=drools-distribution-7.4.1.Final/binaries/drools-beliefs-7.4.1.Final.jar META-INF/kie.conf} org.kie.api.internal.assembler.KieAssemblers = +org.drools.beliefs.bayes.assembler.BayesAssemblerService org.kie.api.internal.runtime.KieRuntimes = +org.drools.beliefs.bayes.runtime.BayesRuntimeService org.kie.api.internal.weaver.KieWeavers = +org.drools.beliefs.bayes.weaver.BayesWeaverService {code} In the first case (Drools 6.x) the code fails on {code:title=ServiceDiscoveryImpl [line: 157] - newInstance(ClassLoader, String)} Class.forName( className, true, classLoader ).newInstance(); {code} where className is "[ new org.drools.beliefs.bayes.runtime.BayesRuntimeService() ]," -- This message was sent by Atlassian JIRA (v7.5.0#75005)