NPE when cleaning transaction

[jaimecasero]

06:15:17,414 DEBUG gov.nist.javax.sip.EventScanner sipEvent = javax.sip.TransactionTerminatedEvent[source=gov.nist.javax.sip.SipProviderImpl@7a21c669]source = gov.nist.javax.sip.SipProviderImpl@7a21c669 06:15:17,414 DEBUG gov.nist.javax.sip.EventScanner About to deliver transactionTerminatedEvent 06:15:17,414 DEBUG gov.nist.javax.sip.EventScanner tx = gov.nist.javax.sip.stack.SIPClientTransactionImpl@fe964550 06:15:17,414 DEBUG gov.nist.javax.sip.EventScanner tx = null 06:15:17,414 ERROR gov.nist.javax.sip.EventScanner Error: java.lang.NullPointerException at org.mobicents.servlet.sip.core.SipApplicationDispatcherImpl.processTransactionTerminated(SipApplicationDispatcherImpl.java:1553) [sip-servlets-impl-3.1.646.jar:3.1.646] at gov.nist.javax.sip.EventScanner.deliverTransactionTerminatedEvent(EventScanner.java:448) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.EventScanner.deliverEvent(EventScanner.java:156) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.SipProviderImpl.handleEvent(SipProviderImpl.java:185) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.stack.SIPTransactionStack.removeTransaction(SIPTransactionStack.java:1896) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.stack.SIPClientTransactionImpl.cleanUpOnTerminated(SIPClientTransactionImpl.java:1888) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.stack.SIPClientTransactionImpl$TransactionTimer.runTask(SIPClientTransactionImpl.java:252) [jain-sip-ri-1.2.258.jar:1.2.258] at gov.nist.javax.sip.stack.timers.DefaultSipTimer$DefaultTimerTask.run(DefaultSipTimer.java:63) [jain-sip-ri-1.2.258.jar:1.2.258] at java.util.TimerThread.mainLoop(Timer.java:555) [rt.jar:1.7.0_91] at java.util.TimerThread.run(Timer.java:505) [rt.jar:1.7.0_91]