Hi All, I have the below rule that I am testing when using a Tomcat server errors the application deploys fine and the rule fires with no errors on the other hand when I tried to deploy the same war on JBOSS I had the following exception can anyone help on this. Exception ( ERROR [STDERR] [1,9]: [ERR 101] Line 1:9 no viable alternative at input '.' java.lang.IllegalArgumentException: Could not parse knowledge. at com.fp.engine.RuleEngineDef.newStatefulKnowledgeSession(RuleEngineDef.java:49) at com.fp.engine.RuleEngineDef.getSession(RuleEngineDef.java:29) ) #created on: May 12, 2010 package com.fp #list any import classes here. import com.fp.vo.StageLine; rule "test revenue rule" when stgLine : StageLine ( ruleName == 'testRev' ) then System.out.println("++++ RULE HIT ON NETSALES ++++"); end -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Error-on-Rule-Parsing... Sent from the Drools - User mailing list archive at Nabble.com.