openJMS newbie question

the code

Hashtable properties = new Hashtable();
           
properties.put(Context.INITIAL_CONTEXT_FACTORY,"org.exolab.jms.jndi.InitialContextFactory"); 

           properties.put(Context.PROVIDER_URL,"tcp://localhost:3035/");
           Context context = new InitialContext(properties);

crashes on the last line with the following stack trace

What am I doing wrong?
thanks,
-jake


java.lang.ExceptionInInitializerError
   at org.exolab.jms.net.orb.ORBFactory.createORB(ORBFactory.java:75)
   at org.exolab.jms.client.net.SharedORB.<init>(SharedORB.java:89)
   at org.exolab.jms.client.net.SharedORB.getInstance(SharedORB.java:292)
   at 
org.exolab.jms.jndi.InitialContextFactory.getInitialContext(InitialContextFactory.java:142) 

   at 
javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
   at 
javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
   at javax.naming.InitialContext.init(InitialContext.java:219)
   at javax.naming.InitialContext.<init>(InitialContext.java:195)
   at jms.QueueSend.<init>(QueueSend.java:45)
   at jms.QueueSend.main(QueueSend.java:32)
Caused by: org.apache.commons.logging.LogConfigurationException: 
org.apache.commons.logging.LogConfigurationException: 
java.lang.NullPointerException (Caused by 
java.lang.NullPointerException) (Caused by 
org.apache.commons.logging.LogConfigurationException: 
java.lang.NullPointerException (Caused by java.lang.NullPointerException))
   at 
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:543) 

   at 
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:235) 

   at 
org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:209) 

   at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:351)
   at org.exolab.jms.net.orb.DefaultORB.<clinit>(DefaultORB.java:110)
   ... 10 more
Caused by: org.apache.commons.logging.LogConfigurationException: 
java.lang.NullPointerException (Caused by java.lang.NullPointerException)
   at 
org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:397) 

   at 
org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:529) 

   ... 14 more
Caused by: java.lang.NullPointerException
   at 
org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:374) 

   ... 15 more
Exception in thread "main"