[WARNING] [SceneCheckMissingRequiredPlugin] This scene is using component defined in plugins but is not importing the required plugins.  
  Your scene may not work on a sofa environment with different pre-loaded plugins.  
  To fix your scene and remove this warning you just need to cut & paste the following lines at the beginning of your scene:   
  root.addObject('RequiredPlugin', name='Sofa.Component.AnimationLoop') # Needed to use components [FreeMotionAnimationLoop]  
  root.addObject('RequiredPlugin', name='Sofa.Component.Collision.Detection.Algorithm') # Needed to use components [BVHNarrowPhase,BruteForceBroadPhase,BruteForceDetection,CollisionPipeline]  
  root.addObject('RequiredPlugin', name='Sofa.Component.Collision.Detection.Intersection') # Needed to use components [LocalMinDistance]