[ns] Node Energy question

[Mohadig Rousstia]

Hallo all,
  
  When I try to investigate the node energy, I got this problem.Can somebody help me dealing with this faulty:
  
  window name "fnode_energy" already exist in parent: window name "fnode_energy" already exist in parent
          while executing
  "frame $w.f$name -borderwidth 2 -relief groove""
          (procedure "_o3" line 24)
          invoked from within
  "_o3 energy_view"
  ..........
  ..........
  
  best regards
  
  Mohadig Widha
  
 		
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