title: akka.io dispatcher configuration Exception
body: <p>In sbt 0.13 project, I put the following in <code>application.conf</code> file located under <code>src/main/resources</code></p>
  
  <p>application.conf:</p>
  
  <pre><code>blocking-dispatcher {
  type = PinnedDispatcher 
  
  executor = "thread-pool-executor"
  thread-pool-executor {
  core-pool-size-min = 2
  core-pool-size-factor = 2.0
  core-pool-size-max = 10
  }
  throughput = 100
  mailbox-capacity = -1
  mailbox-type =""
  }
  </code></pre>
  
  <p>now when I create actor I'm getting exception:</p>
  
  <pre><code>object Main extends App {
  
    implicit val system =  ActorSystem()
  
    val fileReaderActor  = system.actorOf(Props(new FileReaderActor(fileName)).withDispatcher("blocking-dispatcher"), "fileReaderActor")
  
  }
  </code></pre>
  
  <p>I'm getting: </p>
  
  <pre><code>Exception in thread "main" akka.ConfigurationException: Dispatcher [blocking-dispatcher] not configured for path akka://default/user/fileReaderActor
      at akka.actor.LocalActorRefProvider.actorOf(ActorRefProvider.scala:714)
      at akka.actor.dungeon.Children$class.makeChild(Children.scala:191)
      at akka.actor.dungeon.Children$class.attachChild(Children.scala:42)
      at akka.actor.ActorCell.attachChild(ActorCell.scala:338)
      at akka.actor.ActorSystemImpl.actorOf(ActorSystem.scala:518)
      at Main$delayedInit$body.apply(Main.scala:14)
      at scala.Function0$class.apply$mcV$sp(Function0.scala:40)
      at scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
      at scala.App$$anonfun$main$1.apply(App.scala:71)
      at scala.App$$anonfun$main$1.apply(App.scala:71)
      at scala.collection.immutable.List.foreach(List.scala:318)
      at scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:32)
      at scala.App$class.main(App.scala:71)
      at Main$.main(Main.scala:8)
      at Main.main(Main.scala)
  </code></pre>
  
  <p>What am I missing?</p>