This script worked prior to upgrading to JetGroovy 1.5. I did however upgrade IntelliJ from 7.0.2 to 7.0.3 at the same – so that could be the problem. This script is runs fine through Eclipse and their Groovy plugin. The JMSConnectionFactory code looks like: Properties jmsContextProperties = new Properties(); jmsContextProperties.setProperty("org.omg.CORBA.ORBInitialHost", ORB_HOST) jmsContextProperties.setProperty("org.omg.CORBA.ORBInitialPort", ORB_PORT) jmsContextProperties.setProperty("java.naming.factory.initial", NAMING_FACTORY_INIT) jmsContextProperties.setProperty("java.naming.factory.url.pkgs", NAMING_FACTORY_URL_PKGS) jmsContextProperties.setProperty("java.naming.factory.state", NAMING_FACTORY_STATE) jmsContextProperties.setProperty("com.sun.corba.ee.transport.ORBCommunicationsRetryTimeout", ORB_COMM_RETRY_TIMEOUT) ictx = new InitialContext(jmsContextProperties); May 1, 2008 6:39:13 AM com.sun.enterprise.util.ORBManager initORB SEVERE: UTIL6009:Unexcpected Exception in createORB. org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation com.sun.corba.ee.impl.orb.ORBImpl vmcid: 0x0 minor code: 0 completed: No at org.omg.CORBA.ORB.create_impl(ORB.java:326) at org.omg.CORBA.ORB.init(ORB.java:365) at com.sun.enterprise.util.ORBManager.initORB(ORBManager.java:546) at com.sun.enterprise.util.ORBManager.getORB(ORBManager.java:278) at com.sun.enterprise.naming.SerialInitContextFactory.getInitialContext(SerialInitContextFactory.java:180) at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667) at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:247) at javax.naming.InitialContext.init(InitialContext.java:223) at javax.naming.InitialContext.<init>(InitialContext.java:197) at com.seg.firefly.controller.JMSConnectionFactory.connect(JMSConnectionFactory.java:95)