akka.actor.InvalidActorNameException: actor name [btrx] is not unique!

[geeksville]

akka.actor.InvalidActorNameException: actor name [btrx] is not unique!
at akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer.reserve(ChildrenContainer.scala:130)
at akka.actor.dungeon.Children$class.reserveChild(Children.scala:77)
at akka.actor.ActorCell.reserveChild(ActorCell.scala:369)
at akka.actor.dungeon.Children$class.makeChild(Children.scala:202)
at akka.actor.dungeon.Children$class.attachChild(Children.scala:42)
at akka.actor.ActorCell.attachChild(ActorCell.scala:369)
at akka.actor.ActorSystemImpl.actorOf(ActorSystem.scala:552)
at com.geeksville.andropilot.service.AndropilotService.onBluetoothConnect(AndropilotService.scala:441)
at com.geeksville.andropilot.service.BluetoothConnection$$anonfun$connectToDevices$1.apply(BluetoothConnection.scala:91)
at com.geeksville.andropilot.service.BluetoothConnection$$anonfun$connectToDevices$1.apply(BluetoothConnection.scala:80)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at com.geeksville.andropilot.service.BluetoothConnection$class.connectToDevices(BluetoothConnection.scala:80)
at com.geeksville.andropilot.service.AndropilotService.connectToDevices(AndropilotService.scala:68)
at com.geeksville.andropilot.gui.MainActivity.onOptionsItemSelected(MainActivity.scala:999)
at android.app.Activity.onMenuItemSelected(Activity.java:2644)
at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:361)
at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1056)
at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:177)
at android.widget.AdapterView.performItemClick(AdapterView.java:299)
at android.widget.AbsListView.performItemClick(AbsListView.java:1158)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:2957)
at android.widget.AbsListView$3.run(AbsListView.java:3849)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5105)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
at dalvik.system.NativeStart.main(Native Method)
akka.actor.InvalidActorNameException: actor name [btrx] is not unique!
at akka.actor.dungeon.ChildrenContainer$NormalChildrenContainer.reserve(ChildrenContainer.scala:130)
at akka.actor.dungeon.Children$class.reserveChild(Children.scala:77)
at akka.actor.ActorCell.reserveChild(ActorCell.scala:369)
at akka.actor.dungeon.Children$class.makeChild(Children.scala:202)
at akka.actor.dungeon.Children$class.attachChild(Children.scala:42)
at akka.actor.ActorCell.attachChild(ActorCell.scala:369)
at akka.actor.ActorSystemImpl.actorOf(ActorSystem.scala:552)
at com.geeksville.andropilot.service.AndropilotService.onBluetoothConnect(AndropilotService.scala:441)
at com.geeksville.andropilot.service.BluetoothConnection$$anonfun$connectToDevices$1.apply(BluetoothConnection.scala:91)
at com.geeksville.andropilot.service.BluetoothConnection$$anonfun$connectToDevices$1.apply(BluetoothConnection.scala:80)
at scala.collection.Iterator$class.foreach(Iterator.scala:727)
at scala.collection.AbstractIterator.foreach(Iterator.scala:1157)
at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
at scala.collection.AbstractIterable.foreach(Iterable.scala:54)
at com.geeksville.andropilot.service.BluetoothConnection$class.connectToDevices(BluetoothConnection.scala:80)
at com.geeksville.andropilot.service.AndropilotService.connectToDevices(AndropilotService.scala:68)
at com.geeksville.andropilot.gui.MainActivity.onOptionsItemSelected(MainActivity.scala:999)
at android.app.Activity.onMenuItemSelected(Activity.java:2644)
at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:361)
at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:1056)
at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:152)
at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
at com.android.internal.view.menu.MenuPopupHelper.onItemClick(MenuPopupHelper.java:177)
at android.widget.AdapterView.performItemClick(AdapterView.java:299)
at android.widget.AbsListView.performItemClick(AbsListView.java:1158)
at android.widget.AbsListView$PerformClick.run(AbsListView.java:2957)
at android.widget.AbsListView$3.run(AbsListView.java:3849)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5105)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:608)
at dalvik.system.NativeStart.main(Native Method)