drools-examples pong is not running and occurs an error : java.lang.StringIndexOutOfBoundsException: String index out of range: -1 ---------------------------------------------------------------------------------------------------------------------------------- Key: DROOLS-1246 URL: https://issues.jboss.org/browse/DROOLS-1246 Project: Drools Issue Type: Bug Affects Versions: 6.4.0.Final Reporter: Avindu Hendawitharana Assignee: Mario Fusco Priority: Optional Labels: drools-examples