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There were errors initializing your configuration: <openjpa-1.2.0-SNAPSHOT-r422266:667312 fatal store error> org.apache.openjpa.util.StoreException: null
java.lang.Exception: java.lang.NullPointerException	at org.apache.openjpa.util.Exceptions.replaceNestedThrowables(Exceptions.java:242)	at org.apache.openjpa.persistence.PersistenceException.writeObject(PersistenceException.java:100)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at java.io.ObjectStreamClass.invokeWriteObject(ObjectStreamClass.java:945)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1461)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1509)	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1474)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1392)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)	at org.apache.openejb.client.ThrowableArtifact.writeExternal(ThrowableArtifact.java:49)	at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1421)	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1390)	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1150)	at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:326)	at org.apache.openejb.client.EJBResponse.writeExternal(EJBResponse.java:111)	at org.apache.openejb.server.ejbd.EjbRequestHandler.processRequest(EjbRequestHandler.java:197)	at org.apache.openejb.server.ejbd.EjbDaemon.processEjbRequest(EjbDaemon.java:164)	at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:122)	at org.apache.openejb.server.ejbd.EjbDaemon.service(EjbDaemon.java:84)	at org.apache.openejb.server.ejbd.EjbServer.service(EjbServer.java:60)	at org.apache.openejb.server.ServiceLogger.service(ServiceLogger.java:76)	at org.apache.openejb.server.ServiceAccessController.service(ServiceAccessController.java:55)	at org.apache.openejb.server.ServiceDaemon$1.run(ServiceDaemon.java:118)	at java.lang.Thread.run(Thread.java:619)