I'm getting the following NPE in weblogic 7 SP3. Any idea of what could be wrong
here?

Thanks,


weblogic.jms.common.JMSException: System error: java.lang.NullPointerException:

Start server side stack trace:
java.lang.NullPointerException
at weblogic.jms.backend.BESession.acknowledge(BESessi on.java:790)
at weblogic.jms.backend.BESession.invoke(BESession.ja va:1309)
at weblogic.jms.dispatcher.Request.wrappedFiniteState Machine(Request.java:602)
at weblogic.jms.dispatcher.DispatcherImpl.dispatchAsy nc(DispatcherImpl.java:152)
at weblogic.jms.dispatcher.Request.dispatchAsync(Requ est.java:783)
at weblogic.jms.frontend.FESession.acknowledge(FESess ion.java:1571)
at weblogic.jms.frontend.FESession.invoke(FESession.j ava:2256)
at weblogic.jms.dispatcher.Request.wrappedFiniteState Machine(Request.java:602)
at weblogic.jms.dispatcher.DispatcherImpl.dispatchAsy nc(DispatcherImpl.java:152)
at weblogic.jms.dispatcher.DispatcherImpl.dispatchSyn cNoTranFuture(DispatcherImpl.java:361)
at weblogic.jms.dispatcher.DispatcherImpl_WLSkel.invo ke(Unknown Source)
at weblogic.rmi.internal.BasicServerRef.invoke(BasicS erverRef.java:441)
at weblogic.rmi.internal.BasicServerRef$1.run(BasicSe rverRef.java:382)
at weblogic.security.service.SecurityServiceManager.r unAs(SecurityServiceManager.java:726)
at weblogic.rmi.internal.BasicServerRef.handleRequest (BasicServerRef.java:377)
at weblogic.rmi.internal.BasicExecuteRequest.execute( BasicExecuteRequest.java:30)
at weblogic.kernel.ExecuteThread.execute(ExecuteThrea d.java:234)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.ja va:210)
End server side stack trace

at weblogic.jms.client.JMSSession.handleException(JMS Session.java:1744)
at weblogic.jms.client.JMSSession.acknowledge(JMSSess ion.java:1034)
at weblogic.jms.client.JMSSession.acknowledge(JMSSess ion.java:978)
at weblogic.jms.common.MessageImpl.acknowledge(Messag eImpl.java:997)