[rules-users] The Eclipse JDT Core jar is not in the classpath error

Hello, I am using netbeans and ivy with Drools 5. I have successfully named, published the jars from drools to and could build my port of the stock ticker application in netbeans, but when I try to run it, I get the following error: java.lang.NoClassDefFoundError: org/antlr/runtime/tree/TreeNodeStream I have the antlr-runtime jar from the bin/lib on my classpath where I added all the others, but it always fails at this line In loadRuleBase() in Broker.java of the stock ticker sample builder.add( ResourceFactory.newInputStreamResource( Broker.class.getResourceAsStream( RULES_FILE ) ), ResourceType.DRL);. Does anyone have any ideas what jar I might be missing if it's not the antlr-runtime? Thanks, Chris