Program: 45880
Project: 45880
Buggy source:
public void selectForInput(boolean selected){
  if (selectedForInput == selected)   return;
  selectedForInput=selected;
  if (avatarCharacter != null) {
    WorldManager wm=ClientContextJME.getWorldManager();
    ((WlAvatarContext)avatarCharacter.getContext()).getBehaviorManager().setEnable(false);
    if (controlScheme == null && selectedForInput) {
      controlScheme=new DefaultCharacterControls(ClientContextJME.getWorldManager());
      ((AvatarControls)wm.getUserData(AvatarControls.class)).setDefault(controlScheme);
      avatarCharacter.selectForInput();
      controlScheme.addCharacterToTeam(avatarCharacter);
      controlScheme.setCharacter(avatarCharacter);
    }
    if (selectedForInput) {
      avatarCharacter.getContext().getController().addCharacterMotionListener(characterMotionListener);
      avatarCharacter.getContext().addGameContextListener(gameContextListener);
      avatarCharacter.selectForInput();
      controlScheme.addCharacterToTeam(avatarCharacter);
      controlScheme.setCharacter(avatarCharacter);
      ProcessorCollectionComponent pcc=avatarCharacter.getComponent(ProcessorCollectionComponent.class);
      ProcessorComponent characterProcessor=null;
      ProcessorComponent characterAnimationProcessor=null;
      for (      ProcessorComponent pc : pcc.getProcessors()) {
        if (pc instanceof CharacterProcessor)         characterProcessor=pc;
 else         if (pc instanceof CharacterAnimationProcessor) {
          characterAnimationProcessor=pc;
          break;
        }
      }
      cameraChainedProcessor=null;
      if (characterAnimationProcessor != null) {
        cameraChainedProcessor=characterAnimationProcessor;
      }
 else       if (characterProcessor != null)       cameraChainedProcessor=characterProcessor;
      if (cameraChainedProcessor != null) {
        cameraChainedProcessor.addToChain(ViewManager.getViewManager().getCameraProcessor());
        cameraChainedProcessor.setRunInRenderer(true);
      }
    }
 else {
      avatarCharacter.getContext().getController().removeCharacterMotionListener(characterMotionListener);
      avatarCharacter.getContext().removeGameContextListener(gameContextListener);
      if (controlScheme != null) {
        controlScheme.clearCharacterTeam();
      }
      if (cameraChainedProcessor != null) {
        cameraChainedProcessor.removeFromChain(ViewManager.getViewManager().getCameraProcessor());
        cameraChainedProcessor=null;
      }
    }
  }
 else {
    logger.severe("String_Node_Str");
  }
}

Fixed version (ground truth):
public void selectForInput(boolean selected){
  if (selectedForInput == selected)   return;
  if (avatarCharacter == null) {
    logger.warning("String_Node_Str");
    Thread.dumpStack();
    return;
  }
  logger.info("String_Node_Str" + selected);
  selectedForInput=selected;
  if (avatarCharacter != null) {
    WorldManager wm=ClientContextJME.getWorldManager();
    ((WlAvatarContext)avatarCharacter.getContext()).getBehaviorManager().setEnable(false);
    if (controlScheme == null && selectedForInput) {
      controlScheme=new DefaultCharacterControls(ClientContextJME.getWorldManager());
      ((AvatarControls)wm.getUserData(AvatarControls.class)).setDefault(controlScheme);
    }
    if (selectedForInput) {
      avatarCharacter.getContext().getController().addCharacterMotionListener(characterMotionListener);
      avatarCharacter.getContext().addGameContextListener(gameContextListener);
      avatarCharacter.selectForInput();
      controlScheme.addCharacterToTeam(avatarCharacter);
      controlScheme.setCharacter(avatarCharacter);
      ProcessorCollectionComponent pcc=avatarCharacter.getComponent(ProcessorCollectionComponent.class);
      ProcessorComponent characterProcessor=null;
      ProcessorComponent characterAnimationProcessor=null;
      for (      ProcessorComponent pc : pcc.getProcessors()) {
        if (pc instanceof CharacterProcessor)         characterProcessor=pc;
 else         if (pc instanceof CharacterAnimationProcessor) {
          characterAnimationProcessor=pc;
          break;
        }
      }
      cameraChainedProcessor=null;
      if (characterAnimationProcessor != null) {
        cameraChainedProcessor=characterAnimationProcessor;
      }
 else       if (characterProcessor != null)       cameraChainedProcessor=characterProcessor;
      if (cameraChainedProcessor != null) {
        cameraChainedProcessor.addToChain(ViewManager.getViewManager().getCameraProcessor());
        cameraChainedProcessor.setRunInRenderer(true);
      }
    }
 else {
      avatarCharacter.getContext().getController().removeCharacterMotionListener(characterMotionListener);
      avatarCharacter.getContext().removeGameContextListener(gameContextListener);
      if (controlScheme != null) {
        controlScheme.clearCharacterTeam();
      }
      if (cameraChainedProcessor != null) {
        cameraChainedProcessor.removeFromChain(ViewManager.getViewManager().getCameraProcessor());
        cameraChainedProcessor=null;
      }
    }
  }
 else {
    logger.severe("String_Node_Str");
  }
}