message: Bug corrected with new histogram.
diff: @@ -1313,7 +1313,7 @@ Long64_t AliUEHistograms::Merge(TCollection* list)
  TObject* obj;
  // collections of objects
  - const Int_t kMaxLists = 20;
  + const Int_t kMaxLists = 21;
  TList* lists[kMaxLists];
  for (Int_t i=0; i<kMaxLists; i++)
  