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    Thrown when an application is trying to use or access an object whose reference equals to null. You are probably trying to use a reference that points to no location in memory as though it were referencing an object.

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java.lang.NullPointerException: 	at java.util.Hashtable.put(Hashtable.java:398)	at oracle.jms.AQjmsMessage.convertPropertyListToHashtable(AQjmsMessage.java:2377)	at oracle.jms.AQjmsConsumer.dequeue(AQjmsConsumer.java:2012)	at oracle.jms.AQjmsConsumer.receiveFromAQ(AQjmsConsumer.java:916)	at oracle.jms.AQjmsConsumer.receiveFromAQ(AQjmsConsumer.java:835)	at oracle.jms.AQjmsConsumer.receive(AQjmsConsumer.java:745)	at com.evermind.server.ejb.MessageDrivenHome.run(MessageDrivenHome.java:926)	at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)	at java.lang.Thread.run(Thread.java:534)