NullPointerException while running EJB Timer

Issue

• Following NPE is observed while invoking the EJB Timer Service:

ERROR [TimerImpl] Error invoking ejbTimeout
java.lang.NullPointerException
        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)

• Following NPE occurs while invoking EJB timers after migrating from EAP 5.1.x to EAP 5.2

Error invoking ejbTimeout
java.lang.NullPointerException
    at sun.reflect.GeneratedMethodAccessor616.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeTarget(MethodInvocation.java:122)
    at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:111)
    at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:684)
    at org.jboss.ejb3.stateless.StatelessContainer.callTimeout(StatelessContainer.java:200)
    at org.jboss.as.ejb3.timerservice.TimedObjectInvokerBridge.callTimeout(TimedObjectInvokerBridge.java:44)
    at org.jboss.ejb.txtimer.TimerImpl$TimerTaskImpl.run(TimerImpl.java:694)
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
    at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
    at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)