title: Akka Scheduler throws exceptions only in MicroKernel but works fine in eclipse IDE for scala
body: <p>I have a scheduler that looks like given below.  It is meant to send a message every 30 minute to another actor in the Actor system. This code works fine when I run it in eclipse IDE for scala.
  However when I throw this code(with the bootable so that Microkernel can invoke it) in MicroKernel, I get an exception saying </p>
  
  <p>java.lang.NoSuchMethodError: akka.actor.ActorSystem.dispatcher()Lscala/concurrent/ExecutionContext;
  The full stack trace is given below.
  I suspect the problem might be related to "import system.dispatcher" line that is not valid in this context. Or the Scheduler is trying to fire the message too soon.</p>
  
  <p>Please help...</p>
  
  <p><strong>scheduler.scala:</strong></p>
  
  <pre><code>import akka.actor.Actor
  import akka.actor.Props
  import scala.concurrent.duration._
  import akka.actor._
  import java.sql.Timestamp;
  import java.util.Date;
  
  class Scheduler extends Actor with ActorLogging {
      import transactions._
  
      val system = ActorSystem("Daemon")
      import system.dispatcher
      log.info("Scheduler initializing.")
      system.scheduler.schedule( 30 milliseconds, (1000*60*30 ) milliseconds){ 
                  self! updateUows(new Timestamp(new java.util.Date().getTime()))}
  
      def receive = {
  
      case updateUows(time) =&gt; { 
          log.info("updateuow to be sent.")
          context.parent!updateUows(time) 
      }
      }
  
  }
  </code></pre>
  
  <p><strong>The full stacktrace:</strong></p>
  
  <pre><code>    [DEBUG] [07/26/2013 15:38:23.324] [Daemon-akka.actor.default-dispatcher-4] [EventStream(akka://Daemon)] Default Loggers started
  Uncaught error from thread [Daemon-akka.actor.default-dispatcher-4] shutting down JVM since 'akka.jvm-exit-on-fatal-error' is enabled for ActorSystem[Daemon[ERROR] [07/26/2013
  15:38:23.960] [Daemon-akka.actor.default-dispatcher-4] [ActorSystem(Daemon)] Uncaught error from thread [Daemon-akka.actor.default-dispatcher-4] shutting down JVM since 'akka
  .jvm-exit-on-fatal-error' is enabled
  java.lang.NoSuchMethodError: akka.actor.ActorSystem.dispatcher()Lscala/concurrent/ExecutionContext;
          at org.exactearth.PVDaemon.Scheduler$$anonfun$receive$1.applyOrElse(Scheduler.scala:25)
          at akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
          at akka.actor.ActorCell.invoke(ActorCell.scala:386)
          at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
          at akka.dispatch.Mailbox.run(Mailbox.scala:212)
          at akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:506)
          at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
          at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
          at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
          at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
  ]
  
  java.lang.NoSuchMethodError: akka.actor.ActorSystem.dispatcher()Lscala/concurrent/ExecutionContext;
          at org.exactearth.PVDaemon.Scheduler$$anonfun$receive$1.applyOrElse(Scheduler.scala:25)
          at akka.actor.ActorCell.receiveMessage(ActorCell.scala:425)
          at akka.actor.ActorCell.invoke(ActorCell.scala:386)
          at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:230)
          at akka.dispatch.Mailbox.run(Mailbox.scala:212)
          at akka.dispatch.ForkJoinExecutorConfigurator$MailboxExecutionTask.exec(AbstractDispatcher.scala:506)
          at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
          at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
          at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
          at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
  
  Shutting down Akka...
  Shutting down .............(my program)
  </code></pre>