Dear all, I have followed the livetrails at http://labs.jboss.com/file-access/default/members/jbossrules/freezone/liv... but i'm stuck. I get this error: Exception in thread "main" java.lang.IllegalArgumentException: Unable to use expander. Make sure a expander or dsl config is being passed to the parser. [ExpanderResolver was not set]. at org.drools.lang.RuleParser.expander(Unknown Source) at org.drools.lang.RuleParser.prolog(Unknown Source) at org.drools.lang.RuleParser.compilation_unit(Unknown Source) at org.drools.compiler.DrlParser.compile(Unknown Source) at org.drools.compiler.DrlParser.parse(Unknown Source) at org.drools.compiler.DrlParser.parse(Unknown Source) at org.drools.compiler.PackageBuilder.addPackageFromDrl(Unknown Source) at com.livetrail.CreditExample.main(CreditExample.java:26) Anyone has encounter this same problem when going tru the live trails? Please share your solution. Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3979348#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...