Megan Woods [https://community.jboss.org/people/mwtoll] created the discussion "Security Exception, org.drools.base.evaluators.EqualityEvaluatorsDefinition, signer information" To view the discussion, visit: https://community.jboss.org/message/783176#783176 -------------------------------------------------------------- Hi, Normally we work with the commercial API however in this instance I am reviewing JBPM-5.4.0 I am getting the following security exception when I try to load a package from Guvnor. Libraries used in test application: *JBPM-5.4.0.Final-bin.zip* Guvnor: *jbpm-5.4.0.Final-installer-full.zip* Cheers Megan Woods Exception in thread "main" java.lang.SecurityException: class "org.drools.base.evaluators.EqualityEvaluatorsDefinition"'s signer information does not match signer information of other classes in the same package     at java.lang.ClassLoader.checkCerts(Unknown Source)     at java.lang.ClassLoader.preDefineClass(Unknown Source)     at java.lang.ClassLoader.defineClass(Unknown Source)     at java.security.SecureClassLoader.defineClass(Unknown Source)     at java.net.URLClassLoader.defineClass(Unknown Source)     at java.net.URLClassLoader.access$100(Unknown Source)     at java.net.URLClassLoader$1.run(Unknown Source)     at java.net.URLClassLoader$1.run(Unknown Source)     at java.security.AccessController.doPrivileged(Native Method)     at java.net.URLClassLoader.findClass(Unknown Source)     at java.lang.ClassLoader.loadClass(Unknown Source)     at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)     at java.lang.ClassLoader.loadClass(Unknown Source)     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Unknown Source)     at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:258)     at org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:237)     at org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:88)     at java.lang.ClassLoader.loadClass(Unknown Source)     at org.drools.base.evaluators.EvaluatorRegistry.addEvaluatorDefinition(EvaluatorRegistry.java:132)     at org.drools.compiler.PackageBuilderConfiguration.buildEvaluatorRegistry(PackageBuilderConfiguration.java:550)     at org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:196)     at org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:170)     at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:300)     at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:228)     at org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)     at org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:46)     at org.tollgroup.cl.jBPM.guvnor.experiment.Main.linearProcess(Main.java:48)     at org.tollgroup.cl.jBPM.guvnor.experiment.Main.<init>(Main.java:42)     at org.tollgroup.cl.jBPM.guvnor.experiment.Main.main(Main.java:37) -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/783176#783176] Start a new discussion in jBPM at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]