Hi, I move from drool/guvnor 5.0 to 5.3 on my jboss 5.1, Now I am getting class cast exception, when I tried to build package. Caused by: java.lang.ClassCastException: org.drools.rule.builder.dialect.clips.ClipsDialectConfiguration cannot be cast to org.drools.compiler.DialectConfiguration at org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:305) Thanks, -KASH -- View this message in context: http://drools.46999.n3.nabble.com/Jboss-5-1-guvnor-5-3-package-building-e... Sent from the Drools: User forum mailing list archive at Nabble.com.