Just to let you know that I've raised an issue: https://issues.jboss.org/browse/DROOLS-44 -- View this message in context: http://drools.46999.n3.nabble.com/ClassCastException-after-migrating-from-Drools-4-x-to-v5-5-tp4022292p4022431.html Sent from the Drools: User forum mailing list archive at Nabble.com.